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KengaRu [80]
3 years ago
9

Which change will cause the greatest increase in the rate of reaction for this chemical reaction? 8Zn(s) + S8(s) 8ZnS(s) A. addi

ng a catalyst B. increasing the temperature C. increasing the surface area D. increasing the concentration
Chemistry
2 answers:
Rus_ich [418]3 years ago
8 0

I found another question like this. Someone answered "The best answer to this question is adding a catalyst. 

Adding a catalyst  will cause the greatest increase in the rate of reaction for this chemical reaction , 8Zn(s) + S8(s) 8ZnS(s).                                                         ---> adding a catalyst always affects the rate of a reaction."

Sedbober [7]3 years ago
3 0

Answer:  A. adding a catalyst

Explanation:  The given reaction is -

                               8Zn(s) + S8(s) → 8ZnS(s)

Catalyst is the substance which is used to increase the rate of reaction. Thus adding the catalyst will give the greatest increase the rate of reaction by following the path which would have less activation energy.

Increasing the temperature will do increase the rate of reaction as kinetic energy of the reactants increasing thereby increasing the number of collisions.

Increasing the surface area and increasing the concentration will also increase the rate of reaction but the greatest increase will be shown by the addition of the catalyst.

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3 years ago
In this reaction _____. A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and
Helga [31]

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5 0
3 years ago
Which of the following reactant pairs will not react together to produce a reaction?
Zepler [3.9K]
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8 0
3 years ago
Hi please help, tysm. Answer is in nm
boyakko [2]

Answer:

268 nm

Explanation:

The equation needed to find wavelength is:

E = hc / w

In this equation,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> c = speed of light (3.0 x 10⁸ m/s)

-----> w = wavelength (m)

To find the wavelength, you can plug the given values into the equation and simplify. Then, you can convert meters to nanometers.

E = hc / w

7.41 x 10⁻¹⁹ J = (6.626 x 10⁻³⁴ J*s)(3.0 x 10⁸ m/s) / w     <---- Input given values

7.41 x 10⁻¹⁹ J = 1.9878 x 10⁻²⁵ / w                                   <----- Simplify

(7.41 x 10⁻¹⁹ J) x w = 1.9878 x 10⁻²⁵                                <----- Rearrange

w = 2.68 x 10⁻⁷ m                                                          <----- Simplify

 2.68 x 10⁻⁷ m           1 x 10⁹ nm
----------------------  x  ----------------------  = 268 nm
                                         1 m

3 0
2 years ago
Which will freeze faster at the same temperature?
sashaice [31]
Hello!
The answer to your question is A. Fresh water will freeze faster, just because putting anything in the water such as salt lowers it's freezing point. 
Hope this helps :)
4 0
4 years ago
Read 2 more answers
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