Two soluble ionic chemicals interact in a twofold replacement reaction to produce an insoluble solid that separates from the aqueous solution.
[tex]2 \mathrm{OH}_{\mathrm{aq}}^{-}+\mathrm{Cu}_{\mathrm{aq}}^{2+} \rightarrow \mathrm{Cu}(\mathrm{OH})_2 \downarrow[/tex]
What is meant by chemical interact?Some medications have an effect even though they don't change cellular processes or bind to receptors. For instance, most antacids work by interacting chemically with acids to form neutral salts, which reduce gastrointestinal acidity.
Two soluble ionic chemicals interact in a twofold replacement reaction to produce an insoluble solid that separates from the aqueous solution.
In your situation, copper (II) nitrate, Cu(NO3)2, and sodium hydroxide, NaOH, will totally dissociate in aqueous solution to create cation and anions.
[tex]\mathrm{NaOH}_{\mathrm{aq}} \rightarrow \mathrm{Na}_{\mathrm{aq}}^{+}+\mathrm{OH}_{\mathrm{aq}}^{-}[/tex]
[tex]\mathrm{Cu}\left(\mathrm{NO}_3\right)_2(\mathrm{aq}) \rightarrow \mathrm{Cu}_{\mathrm{aq}}^{2+}[/tex]
Cu(OH)2s, an insoluble ionic compound that precipitates out of solution, and aqueous nitrate, NaNO3, another soluble ionic molecule, are the products of the process.
This is the balanced chemical equation for this reaction.
[tex]2 \mathrm{NaOH}_{\mathrm{aq}}+\mathrm{Cu}\left(\mathrm{NO}_3\right)_{2(\mathrm{aq})} \rightarrow \mathrm{Cu}(\mathrm{OH})_{2(\mathrm{~s})} \downarrow 2 \mathrm{NaNO}_{3(\mathrm{aq})}[/tex]
Now note that the reaction requires 2 moles of sodium hydroxide for every 1 mole of copper (II) nitrate.
Rewrite the soluble ionic compounds as cations and anions to obtain the entire ionic equation.
[tex]& 2 \times \overbrace{\left(\mathrm{Na}_{\mathrm{aq}}^{+}+\mathrm{OH}_{\mathrm{aq}}^{-}\right)}^{\mathrm{NaOH}}+\overbrace{\mathrm{Cu}\left(\mathrm{NO}_3\right)_2}^{\left(\mathrm{Cu}_{\mathrm{aq}}^{+}+2 \mathrm{NO}_{\mathrm{aq}}^{-}\right)} \rightarrow \mathrm{Cu}(\mathrm{OH})_{2(\mathrm{~s})} \downarrow \\[/tex]
[tex]& +2 \times \underbrace{\left(\mathrm{Na}_{\mathrm{aq}}^{+}+\mathrm{NO}_{3 \mathrm{aq}}^{-}\right)}_{\mathrm{NaNO}_3}[/tex]
This is equivalent to
[tex]2 \mathrm{Na}_{\mathrm{aq}}^{+}+2 \mathrm{OH}_{\mathrm{aq}}^{-}+\mathrm{Cu}_{\mathrm{aq}}^{2+}+2 \mathrm{NO}_3^{-} \rightarrow \mathrm{Cu}(\mathrm{OH})_2 \downarrow+2 \mathrm{Na}_{\mathrm{aq}}^{+}[/tex]
Eliminating Spector ions is now necessary to obtain the net ionic equation; in this instance, you would have
[tex]2 \mathrm{Na}_{\mathrm{aq}}^{+}+2 \mathrm{OH}_{\mathrm{aq}}^{-}+\mathrm{Cu}_{\mathrm{aq}}^{2+}+2 \mathrm{NO}_3^{-} \rightarrow \mathrm{Cu}(\mathrm{OH})_2 \downarrow+2 \mathrm{Na}_{\mathrm{aq}}^{+}[/tex]
Which is equivalent
[tex]2 \mathrm{OH}_{\mathrm{aq}}^{-}+\mathrm{Cu}_{\mathrm{aq}}^{2+} \rightarrow \mathrm{Cu}(\mathrm{OH})_2 \downarrow[/tex]
A blue, insoluble substance called copper(II) hydroxide separates from the solution.
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prepare a table and write the formula and important uses of:
A.sodium chloride
B.calcium carbonate
C.sodium bicarbonate
D.potassium nitrate
E.diammonium phosphate (DAP)
The prepared table and the formula and important uses of compounds listed is given in the table attached:
What are the compounds about?Sodium Chloride (NaCl), also known as table salt, is a chemical compound made up of one sodium (Na) ion and one chlorine (Cl) ion. It is a common seasoning and preservative in food and is also used in water treatment to remove impurities.
Calcium Carbonate (CaCO3) is a chemical compound made up of one calcium (Ca) ion, one carbon (C) ion and three oxygen (O) ions.
Sodium Bicarbonate (NaHCO3), also known as baking soda, is a chemical compound made up of one sodium (Na) ion, one hydrogen (H) ion, one carbon (C) ion and three oxygen (O) ions.
Potassium Nitrate (KNO3) is a chemical compound made up of one potassium (K) ion, one nitrogen (N) ion and three oxygen (O) ions.
Therefore, Diammonium Phosphate (DAP) is a chemical compound made up of two ammonium (NH4+) ions and one phosphate (PO4) ion.
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classify the following aldehydes and ketones as soluble in water or not very soluble in water.
Drag the appropriate items to their respective bins.
Soluble Not very soluble
For the following aldehydes and ketones .1 , 4 , 5 are soluble and remaining are not very soluble . ether= CH3CH2OCH2CH3,diethyl ether. Ester= CH3COOCH3, ethyl hexanoate, methyl benzoate, remaining are neither ether nor ester
Aldehydes and ketones are two types of organic compounds that belong to a class of compounds known as carbonyl compounds. The defining feature of these compounds is the presence of a carbonyl group (C=O), which is a carbon atom double-bonded to an oxygen The general structural formula for an aldehyde is R-C(=O)-H, where R can be any organic group. Ketones, on the other hand, have the carbonyl group in the middle of the carbon chain and are characterized by the general structural formula R-C(=O)-R', where R and R' can be any organic group
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the complete question is:
classify the following aldehydes and ketones as soluble in water or not very soluble in water.
Drag the appropriate items to their respective bins.
Soluble Not very soluble
7. A substance that had a mass of 786 grams and it was found that there were
17.86 moles was regularly used by firefighters. What is the identity?
Mass, moles and the use by firefighters are not sufficient to determine the identity of a substance. To identify a substance, more information such as chemical and physical properties, chemical reactions, and spectral data are typically required.
What is mass and mole?Mass is a scalar quantity that measures the amount of matter in an object. It is typically measured in units of grams (g) or kilograms (kg). The mass of an object does not change with location, unlike weight which does change with the gravitational force acting upon it.Moles (mol) is the unit of measurement for amount of substance. It is defined as the amount of a substance that contains the same number of entities (such as atoms, molecules, or ions) as there are in 12 grams of pure carbon-12. Moles can be used to express the concentration of a solution, the number of atoms in a sample, or the amount of material in a reaction.The number of moles can be calculated by dividing the mass of a substance by its molar mass (the mass of one mole of the substance).To learn more about mass and mole refer:
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as a soap bubble (n=1.333) evaporates and thins, the reflected colors gradually disappear. What are (a) the bubble thickness just as the last vestige of color vanishes and (b) the last color seen?
The bubble thickness just as the last vestige of color vanishes and (b) the last color seen is 75.02nm
A pattern of interference is what?A pattern of conflict (plural interference patterns) The phase difference between two waves is depicted as a series of light and dark bands that vary in space. Thomas Young demonstrated how the interaction of two sources of light in the same medium results in an interference pattern.
In an interference pattern formed due to a thin film, the bright bands occur when constructive interference takes place. Constructive interference in a thin film is calculated as follows:
2nd = (m + 1/2)λ
d = (m + 1/2)λ/2n = (0+1/2)400nm/2(1.333)
d = 75.02nm
Here n is the refractive index of medium, 2 is the wavelength, m is the order, and d is the thickness of the film.
The wavelength of the light is considered 400 nm because the last color that appears is violet.
Therefore, the thickness of the film is 75.02 nm.
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What happens to the potential energy as the wand moved closer to the VDG?
By bringing the wand close to the generator, you will alter the electric field, increasing the electric potential on the generator. More energy will then be dissipated in any arc or corona discharge.
What is potential energy?Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.
Similar to this, when a spring is moved away from its equilibrium position, it gains some energy, which we can notice by the stress our hands experience when we stretch it.
Potential energy is a type of energy that arises from a change in its position or state, according to our definition.
The different types of potential energy are:
Gravitational potential energyElastic potential energyChemical potential energyElectrical potential energyNuclear potential energyLearn more about potential energy here https://brainly.com/question/14427111
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write a bulleted list of the positive impacts of genetically modified foods on society and the environment.
Answer:
See below
Explanation:
Healthier due to added nutrientsCheaper to produce and as a result cheaper pricesResistance to insects other viruses/diseases and greater tolerance to herbicidesCan grow in harsher climates and poor soilLonger shelf lifeOne disadvantage of coevolution is that:
if one of the two species becomes extinct, the other species may not be able to survive.
one species will likely evolve faster than the other.
only the species that have coevolved will survive if a natural disaster occurs.
the coevolved species will not be able to produce offspring.
Answer:
true
but it depends on their habitat and geographic location
Explanation:
hope this was helpful
Draw a tetrahedral representation of (S)-3-methyl-1-hexyne.
A tetrahedral is an object that has a central atom surrounded by four other atoms.
What is tetrahedral representation?Bond angles of 109.5° are formed between each of the surrounding atoms and the centre atom. The tetrahedron, often known as a 3-simplex, is the three-dimensional manifestation of the more generic idea of a Euclidean simplex.
When four additional atoms are bound to the centre atom of a molecule, the geometry is known as tetrahedral. Tetrahedra have sp3 hybridised orbitals as their structure.
The centre atom in this scenario lacks a lone pair of electrons. The centre atom in this scenario lacks a lone pair of electrons. Complete response: Tetrahedral molecules are ones in which the centre atom is bound to four other atoms and lacks any lone pair of electrons.
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draw all resonance structures for the nitric acid molecule, hno3 (no2oh).
Three oxygen atoms, one nitrogen atom, and one each of hydrogen and oxygen make up each nitric acid molecule.
How many resonance structures does HNO2 have?Three oxygen atoms, one nitrogen atom, and one each of hydrogen and oxygen make up each molecule of nitric acid. One of the oxygen atoms and the central nitrogen atom in HNO3 molecules are doubly bound. With the core nitrogen atom and a hydrogen atom, two additional oxygen atoms are singly linked.
The solution, however, demands the assumption that HNO2 only has one single bond (NO) and one double bond (N=O), and that these two bonds are not equivalent.
In HNO3, also known as nitric acid, H+ and NO3 ions are present in an aqueous solution of NO2 (nitrogen dioxide). Also triangular and flat in shape is the NO3 ion. So, nitric acid has a triangular planar form.
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What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water? (Mg =24, H = 1, O = 16)
Mg (s) + 2H2O (l) → Mg(OH)2 (s) + H2 (g)
a) 0.204
b) 0.051
c) 0.0162
d) 0.219
At long last, change over moles to grams by increase it by the molar mass (0.1017 * 2)= 0.204 grams.
To begin with, you make a proportion between the reactants (H2O & Mg) to decide the restricting reactant so 2 mol H2O/ 1 mol Mg = 2 _calculate moles of Mg (mass/molar mass) = (4.73/24)= 0.197
moles _calculate moles of H2O (mass/molar mass) = (1.83/18)= 0.1017 moles make the proportion once more between H2O & Mg= (0.1017/0.197)= 0.5
So, H2O is the restricting reactant and as you would like the mass of H2 by comparing its moles with moles of H2O, you'll get 0.1017 moles.
Finally, change over moles to grams by duplicate it by the molar mass (0.1017 * 2)= 0.204 grams
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draw tryptophan and select the chiral carbon atom. a selected atom will turn green.
A carbon atom that is joined to four separate atom kinds or groups is known as an asymmetric carbon atom.
What is chiral carbon atom?A carbon atom that is joined to four separate atom kinds or groups is known as an asymmetric carbon atom. As a general rule, chiral carbon center's are carbon atoms positioned at the four corners of a tetrahedron and attached to four distinct substituents. Steatogenic carbons and asymmetrical carbon atoms are other names for chiral carbon atoms. Search for carbons that are bonded to four different substituents if you want to find chiral carbons. Any carbon atoms with double bonds or two hydrogen atoms connected can be promptly removed. We discover that there are three chiral carbons as a result of this.Tryptophan is the only amino acid that has two rings on it. At pH 7.4, it looks like this,
You can see the chiral carbon highlighted. You can tell that it's an [tex]$s p^3$[/tex]carbon and that it has four different substituents on it [tex]( $\mathrm{H}, \mathrm{NH}_3^{+}, \mathrm{COO}^{-}$, and $\mathrm{CH}_2-$ stuff).[/tex]
Therefore it's chiral.
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Which of the following orbital diagrams reflects an atom not in the ground state? O A
O B
O C
O D
O E
A
following orbital diagrams reflects an atom not in the ground state
What do you name an atom's ground state?The ground state of an atom is the lowest energy level it is capable of occupying. This is the atomic energy level that would be regarded as typical.
The electrons in an atom are shown in pictures called orbital diagrams. Orbital diagrams may be created using three rules. Each electron resides in the lowest-energy orbital, in accordance with the Auf Bau Principle. Only two electrons can fit into a single orbital, according to the Pauli Exclusion Principle.
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Part A Provide the structure of the tripeptide val-gly-ser at pH 2 Draw the molecule on the canvas by cho sing buttons from the T The single bond is active by default.
The tripeptide val-gly-ser at pH 2 is composed of three amino acids: Valine, Glycine and Serine. The overall structure is shown below:
What is molecules?Molecules are the smallest unit of matter that can exist and still retain the properties of the material from which it came. Molecules are made of two or more atoms that are bonded together. Each molecule has its own distinct characteristics, depending on the types of atoms it contains and the way they are bonded. Molecules are the building blocks of all matter in the universe, from the air we breathe to the food we eat.
Valine:
H2N-CH(CH3)-CH2-COOH
Glycine:
H2N-CH2-COOH
Serine:
H2N-CH(OH)-CH2-COOH
The overall structure of the tripeptide val-gly-ser at pH 2 is shown below:
H2N-CH(CH3)-CH2-COOH ------ H2N-CH2-COOH ------ H2N-CH(OH)-CH2-COOH
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Which of the following is an aromatic compound that contributes to the beautiful scent of bacon? Your answer O a. Me N Me 2,5-dimethylpyrazine O b. Me Me Et 'N 2-ethyl-3,5-dimethylpyrazine O c. Both (a) and (b) O d. Neither (a) and (b)
2,5-dimethylpyrazine (a) is an aromatic compound that contributes to the beautiful scent of bacon.
What is 2,5-dimethylpyrazine?2,5-dimethylpyrazine is a compound that is known to contribute to the smoky, meaty aroma of cooked bacon. It is created by the Maillard reaction, which occurs when the sugars and amino acids in the bacon are heated, creating a complex mixture of flavors and aromas.
2-ethyl-3,5-dimethylpyrazine (b) is not an aromatic compound that contributes to the beautiful scent of bacon. It is a different compound that can be found in other food items, such as coffee, chocolate and roasted nuts.
So the answer is (a) and not (c) or (d)
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Predict the product, if any, of reaction between methyl propanoate and LiAlH4, then H3O+.
Draw only the product derived from the acyl portion of methyl propanoate.
You do not have to consider stereochemistry.
If no reaction occurs, draw the starting material.
1) Propanyl chloride is an acid chloride. This propanyl chloride on reaction with LiAlH4 and H3O+ yield corresponding alcohol. 2. Methyl propanoate on reaction with aniline yield corresponding amide. 3. Amide on hydrolysis yield carboxylic acid.
When methyl propanoate reacts with lithium aluminum hydride (LiAlH4), the carbonyl group of the ester is reduced by the hydride ion (H-) from LiAlH4 to form an alcohol. The final product of this reaction would be the alcohol derived from the acyl portion of methyl propanoate. When this alcohol is then treated with hydrochloric acid (HCl) or another acid, it will undergo a protonation, forming the corresponding alkyl carbinol. The final product of this reaction is the carbinol and the carboxylic acid derived from the acyl portion of methyl propanoate.The product of the reaction between methyl propanoate and LiAlH4 then H3O+ would be the following structure:
H3C-C(=O)-O-CH2-CH3
| |
H H2O
The product of the reaction is the Carboxylic acid derived from the acyl portion of methyl propanoate.
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For each pair of reactants below select the one that is more nucleophilic.
(1) (a) H2O or (b) CH3CO2-.
(2) (a) -NH2 or (b) NH3.
Draw the structure of the compound you would expect from E2 reaction of the molecule below with NaOH. In cases where there is a choice, draw the most substituted alkene product. Show the expected Z or E stereochemistry
(Light green = Cl, red-brown = Br)
The given compound undergoes an E2 elimination reaction to give an alkene.
Elimination by the E2 mechanism
We observed the following reaction between tert-butyl bromide and cyanide at the beginning of this lesson. This is definitely not a substitution reaction.
(CH3)3C-Br + CN(–) ——> (CH3)2C=CH2 + Br(–) + HCN
We are aware that an SN2 reaction for t-butyl bromide is not anticipated. The ethanol solvent is also insufficiently polar to support an SN1 reaction. Since it is around 10 times weaker than bicarbonate, the other reactant, cyanide anion, is both an excellent nucleophile and a respectable base. The only feasible reaction for this set of reactants, then, appears to be a base-induced elimination.
Methanethiolate is 100 times more nucleophilic than methoxide in the methanol solvent employed here. While methanethiolate is around 106 times more basic than methoxide. As a result, the reaction products exhibit a distinct difference that represents nucleophilicity (bonding to an electrophilic carbon) vs basicity (bonding to a proton).n).
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Acids and alkalis have …………………….chemical properties or reactions.
Acids and alkalis have different chemical properties or reactions and even physical properties.
What are chemical properties?
These properties are defined as those properties which become evident during or after a chemical reaction after the identity of the substance is changed during chemical reaction.
These properties cannot be determined externally just by viewing the substance ,these change immensely after a substance undergoes a chemical change.These are used for identification of unknown substances and for building up chemical classifications.
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Predict the products when cyclohexanol is heated in the presence of H . Show all hydrogen atoms.
The product cyclohexanol with all hydrogen atoms is attached below.
cyclohexanol is alcohol?A single hydroxyl group is added to cyclohexane to create the alcohol cyclohexanol. the ancestor of the cyclohexanol class. It plays the part of a solvent. It belongs to the class of cyclohexanols and is a secondary alcohol.
Cyclohexanol is a very weak acidic compound that is soluble in water (based on its pKa). Garden tomato (variety), okra, and sweet basil contain the chemical cyclohexanol, which has the flavors of camphor, menthol, and phenol. This property makes cyclohexanol a potential biomarker for the consumption of these foods.
When cyclohexanol is heated with phosphoric acid in a catalytic amount, the result is cyclohexene because water is eliminated during dehydration. The phosphoric acid's function is to protonate the alcohol (described in "step a" below), making it a useful leaving group.
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Match the following descriptions of titration curves with the diagrams/Figure 1). Match the words in the left column to the appropriate blanks in the sentences on the right. diagram (i)
The diagram depicting the stration of a strong base added to a weak acid is diagram (ii) The diagram depicting the titration of a strong base added to a poly protic acid is diagram (iv) The diagram depicting the thration of a strong acid added to a strong base is diagram (iii) The diagram depicting the titration of a strong bate added to a strong acid is
The plot of the pH of the analyte solution vs the quantity of titrant applied over time is known as a titration curve.
Important information can be gleaned from a titration curve's shape, which is a plot of pH against the quantity of acid or base added. The titration of a strong base given to a strong acid that starts out with a low pH is shown in the diagram i. The titration of a strong acid applied to a strong base at a high pH is shown in diagram ii. The titration of a strong base added to a weak acid, which starts out with a low pH but is in the buffer region, is shown in diagram (iii). As there are many H+ ions present, the titration of a strong base added to polyprotic acid is shown in steps in diagram (iv).
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What hybridization do you expect for the atom indicated in each of the following species? Explain. A) CH 3 CO 2 − for the last C B) PH 4 + for P C) AlF 3 for Al D) H 2 C=CH-CH 2 + for the last C
A) CH3CO2 for the last C- sp2 hybridization.
B) PH4+ for P: sp3 hybridization.
C) AlF3 for Al: sp3d2 hybridization.
D) H2C=CH-CH2+ for the last C: sp hybridization.
What is hybridization ?
Hybridization is the process by which atomic orbitals combine to form new hybrid orbitals with different energy levels and geometric shapes. These hybrid orbitals are used to form chemical bonds between atoms. The type of hybridization depends on the number of atoms and lone pairs of electrons surrounding the central atom in a molecule. Some common types of hybridization include sp3 (four orbitals), sp2 (three orbitals), and sp (two orbitals) hybridization.
A) CH3CO2- for the last C: The last C atom in CH3CO2- is bonded to one O atom and two C atoms. In order to form these bonds, the C atom needs to have three orbitals available for bonding, which means it is in sp2 hybridization.
B) PH4+ for P: The P atom in PH4+ is bonded to four H atoms. In order to form these bonds, the P atom needs to have five orbitals available for bonding, which means it is in sp3 hybridization.
C) AlF3 for Al: The Al atom in AlF3 is bonded to three F atoms. In order to form these bonds, the Al atom needs to have six orbitals available for bonding, which means it is in sp3d2 hybridization.
D) H2C=CH-CH2+ for the last C: The last C atom in H2C=CH-CH2+ is bonded to one H atom and one C atom. In order to form these bonds, the C atom needs to have two orbitals available for bonding, which means it is in sp hybridization.
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Passage 1
Passage 2
Dorothy Parker (1893-1967) was an American short-story
writer, poet, and critic best known for her satiric wit
This excerpt is from her essay titled Henry' in her book
Men Im Not Married To.
from "Henry"
by Dorothy Parker
You would really be surprised at the number of
things that Henry knows just a shade more
about than anybody else does. Naturally he
can't help realizing this about himself, but you
mustn't think for a minute that he has let it
spoil him. On the contrary... [w]hen it comes
to giving his time and his energy there is
nobody who could not admit that Henry is
Passage 1
Passage 2
Passage 1 Passage 2
Drag ONE sentence to EACH box to compare and
contr themes in Passage 1 and Passage 2.
Both
generous. To a fault, I have even heard people
go so far as to say.
... And that is the way Henry is about
everything. He will stroll over to a tennis court,
and stand on the side lines, at what I am sure
must be great personal inconvenience, calling
words of advice and suggestion for sets at a
stretch. I have even known him to follow his
friends all the way around a golf course,
offering constructive criticism on their form as
he goes. I tell you, in this day and generation,
you don't find many people who will go as far
out of their way for their friends as Henry does.
And I am far from being the only one who says
so, too.
strong friendships are based on emotion rather than
intellect.
Friends who remain detached from others may risk
friendships that expose their faults.
Friends who flaunt their perceived superiority may
risk losing friendships.
Most friendships are complicated because people are
imperfect.
there are ________ molecules of methane in 0.123 mol of methane (ch4).
There are 7.4 x 10²² molecules of methane in 0.123 mole of methane (ch4).
Methane is a substance that has the chemical formula CH4 (one carbon atom bonded to four hydrogen atoms). It is the simplest alkane, a group-14 hydride, and the primary component of natural gas. Methane is very abundant on Earth, making it an economically appealing fuel, but due to its gaseous nature at standard temperatures and pressure, its capture and storage present technical problems. Methane is a naturally occurring gas that can be found underground and beneath the bottom.
A mole is a measurement unit for numerous particles (atoms, molecules, and ions), where 1 mole equals the number of particles in a substance as the number of atoms in 12 grams of C-12.
1 mole [tex]= 6.02*10^{23}[/tex] particles
Can be formulated :
N = [tex]n *[/tex] No
N = number of gas particles
No = Avogadro number ([tex]6.02*10^{23}[/tex])
n = number of moles
Input the value :
N [tex]= 0.123 * 6.02*10x^{23}[/tex]
N [tex]= 7.4 * 10^{22}[/tex]
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What is the hydronium ion concentration of an acid rain sample that has a pH of 3.45?
A) 2.82 × 10-11 M
B) 3.55 × 10-4 M
C) 3.45 M
D) 10.55 M
The hydronium ion concentration of an acid rain sample that has a pH of 3.45 is 3.55 × 10-4 M.
Given the pH of hydronium ion = 3.45
The hydronium ion concentration can be calculated from the pH using the exact opposite mathematical procedure. The conjugate acid of H2O is H3O+. In aqueous solutions, a proton is denoted by the symbol H3O+. The proton would create a different structure in a non-aqueous solution. H2O(l) → H+(aq) + OH-(aq).
Because hydrogen ions bond to water molecules to generate hydronium ions, the equations pH = -log[H3O+] and pH = p[H3O+] can be used to compute a solution's pH.
pH + pOH = 14 then [H+] = 10^-pH
So the concentration of hydronium ion = 10^-3.45 = 3.55 × 10-4 M
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The reaction between strontium hydroxide and chloric acid produces __________.A) a molecular compound and a weak electrolyteB) two weak electrolytesC) two strong electrolytesD) a molecular compound and a strong electrolyteE) two molecular compounds
The reaction between strontium hydroxide and chloric acid produces: D) a molecular compound and a strong electrolyte. It is solved using the concept of acid-base.
What is acid-base reaction?The neutralization process, which produces a salt and water molecule, occurs when an acid and a base interact. Here, the reaction between the acids chloric acid and strontium hydroxide produces strontium perchlorate and two moles of water. The strong electrolyte strontium perchlorate entirely dissociates in one direction, similar to sodium chloride. Both strontium hydroxide and chloric acid are powerful acids and bases. According to Pearson's Hard Soft Acid Base Concept, ionic complexes are created when hard acid and hard base mix. Ionic complexes often completely dissociate and are thus regarded as strong electrolytes (in the present case Strontium perchlorate).
As far as we are aware, Sr is a group 2 alkaline earth metal. Because it produces basic oxides, when it reacts with acid, salt and water are produced. Since SrO is also a basic oxide in this instance, it may react with acids like HClO₄ (chloric acid) to produce salt and water.
Thus, it will form one molecular compound that is H₂O and one strong electrolyte that is Sr(ClO₄)₂.
The reaction is as follows:
SrO + 2HClO₄ → Sr(ClO₄)₂ + H₂O
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Properties of matter affect how people need to handle the different states of matter, such as the propane gas that is being carried inside this tanker truck. Look at the tank of the truck that contains the gas. Why is this tank design useful for transporting gas? Considering the volume and shape properties of each state of matter, how might the container on a truck carrying a liquid or a solid be designed differently?
Answer:
Explanation:
The tank design of the truck is useful for transporting gas because it is able to hold large volumes of gas while taking up minimal space. The container is typically long and cylindrical in shape, allowing the gas to be compressed and stored in a smaller space.
If the truck were carrying a liquid, the container would likely be designed differently. Liquids take the shape of their container, so the container would need to be able to hold the liquid in an upright position without spilling. This could be achieved through the use of a tank with a closed top and a small opening at the bottom for dispensing the liquid.
For a solid, the container would also need to be designed differently. Solids have a fixed shape and volume, so the container would need to be able to hold the solid without crushing or altering its shape. This could be achieved through the use of a container with walls that are thick and sturdy enough to support the weight of the solid.
How many peaks appear in the proton spin decoupled 13C NMR spectrum of the compound below?
Two peaks can be seen in the proton NMR spectra of the molecule below.
What is Proton nuclear magnetic resonance?In order to ascertain the structure of a substance's molecules, proton nuclear magnetic resonance uses nuclear magnetic resonance with regard to hydrogen-1 nuclei inside its molecules. The preferred method for determining or validating the structure of organic molecules or those containing protons is H NMR. When compared to other nuclei, a solution-state proton spectrum may be obtained relatively quickly, and it contains a wealth of knowledge regarding a compound's structure. Because proton spectra are considerably easier to acquire than carbon spectra, H NMR spectroscopy is employed more frequently than 13C NMR. Since just 1% of carbon atoms have the 13C isotope, it is challenging to find.
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What is the quotient 10 ÷ (-5)?
Answer:
-2
Explanation:
10 ÷ (-5) = -2
A mixture is made by combining 1.50 lb
of salt and 4.45 lb
of water. What is the percentage of salt (by mass) in this mixture?
The mass percent of a component in a mixture is the ratio of its mass to the total mass multiplied by 100. The mass percent of salt in the mixture is 25.2 %.
What is percentage composition ?The percentage composition of a component in a compound or mixture is the fraction of that component in the total amount of the mixture. Mass percent is a common term used to express the concentration of a solution as well.
The mass percent of a component in a mixture is the ratio of its mass to the total mass of the mixture multiplied by 100.
Given the mass of salt = 1.50 lb
mass of water = 4.45 lb
total mass = 1.50 + 4.45 = 5.95 lb
Mass percent of salt = mass of salt/total mass
= 1.50 / 5.95 × 100 = 25%.
Therefore, the mass percent of the salt in the mixture is 25%.
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A 2.0-liter closed container holds 1.0 mole of an ideal gas at a certain temperature and pressure. Which closed container will hold 3.0 moles of this ideal gas at the same temperature and pressure?
The volume of the closed container that will hold 3.0 moles of this ideal gas at the same temperature and pressure is 6L.
How to calculate number of moles?Avogadro's law is used to predict what will happen to the volume of a sample of gas as we change the number of moles. Because V/n is a constant for any given sample of gas (at constant P and T).
The volume of an ideal gas is directly proportional to the number of moles of the gas in a container. Hence, the following expression can be used:
V₁/n₁ = V₂/n₂
Where;
V₁ = initial volumen₁ = initial molesV₂ = final volumen₂ = final moles2/1 = V/3
V = 6L
Therefore, a 6L closed container can be used to hold the 3 moles ideal gas.
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A 250 -g sample of water at 80 C is mixed with 250 g of water at 10 c Find the entropy changes for (a) the hot water, (b) the cool water, and (c) the system.
A thermodynamic system's change in disorder or randomness is measured by a phenomena called entropy change.
What is a simple definition of entropy?The amount of thermal energy per unit of temperature in a system that cannot be used to carry out beneficial work is known as entropy. Since work is produced by ordered molecular motion, entropy also serves as a proxy for a system's molecular disorder or unpredictability.
Entropy Change is a phenomena that measures the evolution of randomness or disorder in a thermodynamic system. It has to do with the heat or enthalpy conversion that occurs during work. More randomness indicates a high entropy in a thermodynamic system.
The entropy grows from solid to liquid to gas, and by observing the phases of the reactants and products, you can determine if the change in entropy is positive or negative. Entropy will rise whenever there is a rise in gas moles.
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