Answers
The Born -Haber cycle is used to find out the lattice energy and formation enthalpy of a reaction from its individual steps. The total energy of the cycle is zero.
What is Hess law ?According to Hess law, we can split a reaction into several steps. each steps involves the phase transitions, ionization of constituent elements.
The energy required form a solid compound from its constituent elements in gaseous state is called the lattice energy of the compound. Here the formation of KBr from gaseous K and Br is given. Thus the enthalpy change is called lattice energy.
The lattice energy plus the formation energy is called the total energy in the reaction. Where, the enthalpy change of the cycle is zero. The Born -Haber cycle of the given reaction include first reaction with the phase transition of each elements and their ionization.
The ionized atoms combine together to form the product, which is written as the overall reaction in the top.
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Related Questions
what's the formula for hypoarsenous acid?
Answers
Answer:
As(OH)3 or AsH3O3
Explanation:
What type of weathering creates a granite Tor?
Physical or
Chemical or
Biological
Answers
Answer:
Physical
Explanation:
Physical weathering is defined as the geological process in which rocks are broken down but there is no change in their chemical composition.
Granite tor are the rock masses above the ground surface which are associated with granites
Granite Tor is an example of physical weathering as they formed by freeze–thaw weathering. Granite tor are formed when magma present in the crust cools down and form batholith. Rocks above batholith gets erodes and left the batholith to expose.
Hence, the correct answer is "Physical weathering'.
The melting of metamorphic or igneous rock forms what substance? How? Why?
Answers
Answer: Metamorphic rocks form by recrystallization of either igneous or sedimentary rocks,
Explanation:
Which of the following ideas is NOT accepted as true according to today’s atomic theory?
a. Atoms are the basic unit of matter
b. Electrons move in circular
paths around the nucleus
c. Protons, electrons, and neutrons are smaller than the atom
d.The nucleus has charged and uncharged particles
Answers
Answer:
D
Explanation:
The process by which organisms makes more
organisms like themselves is called
Answers
Answer:
Reproduction
Explanation:
Reproduction is the biological process by which new “offspring” (like organisms) are produced from their “parents" (the original organism)
Question pic
(Will make brainliest)
Answers
Answer:
c
Explanation:
Answer:
a and c
Explanation:
Mars have more gravity than earth?
True or false?
Answers
Answer:
false
Explanation:
earth is larger than mars so it has more gravity
Answer: false
Explanation:
which of the substance changes when it is heated
A . mass
B . volume
C . weight
D . brass
Answers
Answer:
mass
Explanation:
Answer:
The answer is C.
Explanation:
If you have absolutely identical objects that have the same weight exactly when they are at the same temperature, then when one object is heated, it will weigh more.
Hope this helps :)
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Bill is experimenting with two simple machines. How will he know which
machine is more efficient?
O It will use less force to do the same amount of work.
O It will use more force to do the same amount of work.
O It will be lighter and stronger than the other simple machine.
It will not be possible to tell which simple machine is more efficient.
Answers
Neon is a noble gas because it is stable non reactive and has ____ valence electrons
Answers
Answer:
8 .....................
What type of energy does photosynthesis turn energy from the sun into?
Answers
Explanation:
it turn into chemical energy
Hope this helps
Have a great day/night
Feel free to ask any questions
Anyone know how to do this?
Answers
Answer:I can’t see the question
Explanation:
What is the most basic level of biological organization?
Question 1 options:
Organism
Cell
Molecule
Atom
Answers
Answer:
molecule
Explanation:
Answer:
c
Explanation:
You are given 0.39 mol of niobium (Nb). How many grams of niobium do you have?
Answers
Answer:
36gNb
Explanation:
0.39 mol Nb*92.91g Nb/1 mol Nb=36 g Nb
Fill in the blank...
Each element is made up of only one kind of ________
Answers
¿Qué es la ciencia? ¿Qué importancia tiene la ciencia para el desarrollo de la humanidad y de la vida? AYUDA PORFAAAAAAAA
Answers
Explanation:
La ciencia puede entenderse como una forma que el ser humano encontró para adquirir conocimientos a través de métodos científicos, tecnológicos y basados en estudios, pruebas e investigaciones y no basados en el pensamiento para explicar los fenómenos humanos, de la naturaleza y de la vida.
La ciencia tiene un rol impactante y transformador en la sociedad, todo el conocimiento adquirido por el hombre a través de la ciencia ha transformado para mejor la vida de las personas, generando mayor calidad de vida, salud, educación, sentido crítico, etc.
En el escenario pandémico que vive el mundo actualmente, la ciencia es fundamental, a través de sus estudios e investigaciones que han ayudado en el desarrollo de vacunas efectivas para inmunizar a los humanos contra el virus y salvar vidas.
Question 8
Using Henry's Law: Sz/P1-S2/P2
To increase the solubility of a gas at constant temperature and 202kPa pressure from
0.85g/L to 5.1g/L, the pressure would have to be increased to:
A.505kPa
B.17.2kPa
C.606kPa
D.1212kPa
Answers
Answer:
D
Explanation:
plug the numbers
HELP!!!!!!!!
One use of CaCl 2 to salt roads in the winter. The equation that describes the change in freezing point of a solvent due to a solute is T f =i x K f x molality. How much would the freezing point decrease if a 3.23 molal (m) solution were achieved? (K f =1.86^ C/(mol/kg) for water and i = 3 for CaCl 2 )
Answers
Answer:
On contact with ice, calcium chloride forms brine rapidly, which lowers the freezing point of water and melts snow and ice quickly. Calcium chloride forms brine faster than other ice melters because its hygroscopic properties actually cause it to attract moisture from its surroundings
Explanation:
HOPE IT WILL HELP YOU
In general, what causes a sea breeze?
O
A. The difference in density between land and water
B. The difference in cloud cover between land and water
Ο Ο Ο
C. The difference in specific heat capacity between land and water
D. The difference in elevation between land and water
Answers
Answer:
The usual cause of sea breeze is the difference in specific heat capacity between land and water Land heats and cools more quickly than water. What is the cause of a sea breeze? The air over the land is warmed and rises, to a greater temperature than that over the sea.
Explanation:
Your answer is C ! <3
The difference in specific heat capacity between land and water is the cause of sea breeze.
What is sea breeze?land and ocean heat up at different rates, sea breezes often occur during hot, summer days. The land surface warms up more quickly than the water surface during the day. As a result, the air above land is warmer than that over water.
Just to refresh your memory, warmer air is lighter than cooler air. Warm air rises as a result. As a result, the warmer air above the ground is rising. The cooler air above the water is moving across the surface of the land to replace the rising heated air as it rises over the land.
This is the sea breeze, which is seen at the top of the next picture. The land breeze that happens is seen at the bottom of the following picture.
Therefore, The difference in specific heat capacity between land and water is the cause of sea breeze.
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lithium electron configuration
Answers
Answer:
Dalam fisika atom dan kimia kuantum, konfigurasi elektron adalah susunan elektron-elektron pada sebuah atom, molekul, atau struktur fisik lainnya. Secara formal, keadaan kuantum elektron tertentu ditentukan oleh fungsi gelombangnya, yaitu sebuah fungsi ruang dan waktu yang bernilai kompleks.
#semogamembantu
How is wind energy more environmental friendly than heat energy?
Answers
Answer:
Wind is an emissions-free source of energy
Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.
Explanation:
What does the illustration indicate?
Answers
Answer: A
Explanation:
I need help I'll mark you as Brainliest
Answers
Answer: c
Explanation:
3- Given 90.0 g C6H1206
a- How many moles of Glucose are present in 90.0 g of glucose?
Answers
molar mass = 180.18
//
[tex]90.0 \: g \times \frac{1 \: mol}{180.18 \: g} = 0.4995004995 \: mol[/tex]
[tex] = 0.500 \: mol[/tex]
1) Write the symbol and charge for each individual ion
2) Balance the charge so that they equal to zero
3)Write the formula based on how many of each ion you used in step 2
6) Nitrogen and Barium
7) strontium and fluorine
8) iodine and calcium
9) magnesium and sulfur
10) Sulfur and aluminum
Answers
N -3
Ba +2
Sr +2
F -1
I -1
Ca +2
Mg +2
S -2
S -2
Al +3
//
Ba3N2
SrF2
CaI2
MgS
Al2S3
//
I don't really understand 2.
for 50 points!! im having a bit of trouble haha
Answers
Answer:
answer 16.1.) bohr model used to predict bonding abilities2.) electrical charge attraction holds atom together3.) valence electrons are outermost electrons4.) electron cloud - where electrons are foundanswer 17.falsebecause atomic number are numbers of protons
Determine if you can swim in 1×10^27 molecules of water
Answers
How is humility related to air pressure
Answers
Answer: Edmentum question:
The following graph shows the barometric pressure over the course of the day in Bellingham. What effect will this trend likely have on cloud cover and precipitation over the city?
a scatter plot showing the barometric pressure of an area, with air pressure on the y-axis and time on the x-axis
Explanation: edmentum answer:
In the graph, barometric pressure is decreasing. The drop in pressure represents a low-pressure system. This type of system will cause an increase in cloud cover and precipitation.
You start with 100mL of 14M HNO3 and 10grams of copper metal. How many moles of the nitrogen dioxide gas will be produced?
Answers
Answer:
0.316 moles are produced.
Explanation:
We state the redox reaction:
4HNO₃ + Cu → Cu(NO₃)₂ + 2NO₂ + 2H₂O
We need to determine the limting reactant:
0.1 L . 14 M = 1.4 moles
10 g . 1mol/ 63.54g =0.158 mol
Cu is the limiting reactant. Let's see
4 moles of acid need 1 mol of Cu to react
1.4 moles of acid may react to (4 . 1) / 1.4 = 0.35 moles
We do not have enough Cu.
1 mol of Cu can produce 1 mol of NO₂
Then 0.158 moles will produce, 0.316 moles. (double of moles)
If we see stoichiometry, ratio is 1:2
where did all the elements in the universe come from?
Answers
Answer:
Wal-mart XDDDDD
Explanation: