PLS HELP ME WITH MY ASSIGNMENT WILL MARK BRAINLIEST!

Answer:

D. anions ; +1

Explanation:

Alkali metals tend to lose one electron and form ions with a single positive charge. 'alkali metals typically lose 1 eclectron to form anions with a charge of +1".

How did the Hale-Bopp comet get its name?
O The name refers to the comet's shape.
O It was named after the first people to see it.
O A committee of astronomers named it after ancient astronomers.
O The name was at the top of the IAU's comet-naming list

A certain rock has a mixture of several different elements. It contains 33g of zinc, 22g of
iron and 16g of oxygen. What percentage of the rock, by mass, is zinc?

john roller skates with a constant speed of 8 miles per hour. how long will he take to travel a distance of 28 miles? please use the formula Speed = Distance/Time

What type of element has 8 electrons in their outer most level?
non-metals
metals
noble gases
alkali metals

A student dissolves 14.8 g of ammonium nitrate (NH4NO2) in 300. g of water in a well-insulated open cup. He then observes the temperature of the water fall from 20.0°C to 15.0°C over the course of 4.3 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction:

NH4NO3(s) → NH4+(aq) + NO3^- (aq)

Required:
a. Is this reaction exothermic, endothermic, or neither?
b. If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case.

To date, scientific tests of astrology have never found that its predictive methods work.


True
False

Question 9 a N20(9) + CO(9) - N2(9) + CO2(9) The rate of the reaction represented above increases significantly in the presence of Pd(s). Which of the following best explains this observation?
А Pd increases the activation energy of the reaction.
B Pd absorbs the heat produced in the reaction. C One of the reactants binds on the surface of Pd, which introduces an alternative reaction pathway with a lower activation energy.
D One of the products binds on the surface of Pd, which increases the reaction rate by decreasing the concentration of products in the mixture.​

The spot on the fault where the pressure first releases is called the

i have to match the word lithosphere to life, sky/air, land and water which one?

The sum of all the potential energy and kinetic energy is an object is equal to its______

due today pls help! :(

The PH of a solution of Hcl is 2.find out the amount of acid present in a litre of the solution ​

List out fifteen ways of how you use water in your everyday life

which of these would best describe the outcome of increasing the kinetic energy of molecules in the picture above?

How are scientists trying to use a plant catalyst to create solar fuels? Someone please answer?

which acide will have more strength
out of two acids of pH
value 2
and 5 why
​

What are some positive and negative things about living near a volcano?

Helpppppp plsssssssss

chemical formula for calculating pressure​

Which of the following is not something that should be considered when creating a debt payment plan?
a. In general, the larger the debt, the longer you should plan to take to pay it off.
b. Higher interest rates create more cost than lower interest rates on a similar debt.
C. Making a payment larger than required or expected will help pay off the debt sooner.
d. The longer you take to pay off your debt, the more you will be paying in interest and other
fees

Please help me answer this I will mark brainliest

At STP, in the equation C(g) + O2(g) --> CO2(g), one liter of O2 yields how many liters of CO2?

Many inland areas around Florida contain extinct marine fossils. Which of the following statements best describes how this might have occurred?

Gold is yellow, shiny, smooth, and is found in the ground. A geologist finds a material that she thinks may be gold. Which of the following tests would reveal that
the material is not gold and not an element?

A. Its density is different from that of gold.
B. Its melting point is different from that of gold.
C. The material is composed of two different substances.
D. Its boiling point differs from that of gold.

balance kclo3-kcl+02​

Sodium benzoate, the sodium salt of benzoic acid, is used as a food preservative. A sample containing solid sodium benzoate mixed with sodium chloride is dissolved in 50.0 mL of .5 M HCl, giving an acidic solution (benzoic acid mixed with HCl ). This mixture is then titrated with .393 M NaOH. After the addition of 46.50 mL of the solution, the pH is found to be 8.2. At this point, the addition of one more drop ( .02 mL) of NaOH raises the pH to 9.3 . Calculate the mass of sodium benzoate (NaC6H5COO) in the original sample. (Hint: At the equivalence point, the total number of moles of acid [here HCl] equals the total number of moles of base [here, both NaOH and NaC6H5COO]

what is valence electron configuration for group 4A (14)

of nitrogen gas)?
How many grams of H2 are needed to produce 71.1 g of ammonia (NH3) (assuming unlimited availability
3 H2+ N2 + 2NH3
Provide the answer with 3 or more significant figures.

What kind of questions do scientists ask?

A. Ones that there are no right answers to
B. Ones that only deal with scientific issues
C. Ones that deal with matters of opinion
D. Ones that are answered through observing​

Danielle is designing a system to help race cars slow safely and rapidly at her local racetrack. The racetrack is a straight, 1,000-meter stretch of asphalt. Half of the track is devoted to races and the other half is designed to let cars decelerate after crossing the finish line.

Danielle has designed a pair of small parachutes that are automatically released out the back of a car once it crosses the finish line. When her system works properly, the race car driver does not need to apply the brakes to bring the car to a stop before running out of track.

When Danielle tests a prototype of her design, it brings a race car to a stop 275 meters behind the finish line. After taking some measurements, she decides that her design causes the driver to experience too much force. To correct this, she could
A.
make the parachutes larger in order to increase the drag forces on the car and bring it to a stop 200 meters after crossing the finish line.
B.
add a third parachute in order to increase the drag forces on the car and bring it to a stop 175 meters after crossing the finish line.
C.
make the parachutes smaller in order to decrease the drag forces on the car and bring it to a stop 400 meters after crossing the finish line.
D.
remove one of the parachutes in order to decrease the drag forces on the car and bring it to a stop 550 meters after crossing the finish line.

Determine whether each practice is recommended to keep a micropipette clean and functioning properly.
1. Use a new tip any time you change solutions.
A. Recommended.
B. Not recommended.
2. Turn the micropipette upside down after loading with liquid.
A. Recommended.
B. Not recommended.
3. Save tips after removal to reuse them later.
A. Recommended.
B. Not recommended.
4. Place the micropipette on a rack after using it.
A. Recommended.
B. Not recommended.
5. Place the micropipette on the bench between uses.
A. Recommended.
B. Not recommended.