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a.  A reaction that makes equilibrium
b.  A reaction in which products can react to re-form reactants
c. shifts to fewer moles
d. middle

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2. A reversible reaction always must have some ______ and some _______ at the end of a reaction. 

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2. A reversible reaction always must have some ______ and some _______ at the end of a reaction. 

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a. Only reactants
b.Only products
c. Some product and some reactant

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3.What four factors affect the reaction rates and how does each one affect it?

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3.What four factors affect the reaction rates and how does each one affect it?

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Higher temperature causes more collisions per second and they are of greater energy. Higher concentration there are more collisions per second. Increase in pressure fever moles increase the rate, and a catalyst lowers the activation
energy.

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4. What happens to a system when pressure is increased? 

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4. What happens to a system when pressure is increased? 

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When pressure is increased in the system it shifts to _____ moles.
a. more
b.fewer
c.60

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5. At what point in the chemical reaction is the activation complex?  

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5. At what point in the chemical reaction is the activation complex?  

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The activation complex is found in the ______ of the chemical reaction.
a. the end
b. the beginning
c. the middle

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6. Activation energy is a barrier between products and reactants 

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6. Activation energy is a barrier between products and reactants 

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True or false

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7. Why  does a higher temperature cause a reaction to go faster? 

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7. Why  does a higher temperature cause a reaction to go faster? 

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Higher temperature causes a reaction to go faster because of more energy and more collisions.

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8. what does the catalyst do to the activation energy 

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8. what does the catalyst do to the activation energy 

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a. the catalyst lowers the activation energy
b. the catalyst increases the activation energy
c.none of the above

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9. What happens to the catalyst  after the reaction?

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9. What happens to the catalyst  after the reaction?

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a. it's unchanged
b. increases
c. decreases
d. is of no use

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If a stress is applied to a system is dynamic equilibrium, the system changes to relieve the stress.

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11. How will  a chemical reaction at equilibrium shift if more products are added? 

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11. How will  a chemical reaction at equilibrium shift if more products are added? 

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it will shift to form more reactants.

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12. how will a chemical reaction at equilibrium shift if more reactants are added?

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12. how will a chemical reaction at equilibrium shift if more reactants are added?

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If more reactants are added shift to making more products.

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14. wright the following expression in the equilibrium constant expression for the following CH4(g)+2O2(g)      CO2(g)+2H2O(g)

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14. wright the following expression in the equilibrium constant expression for the following CH4(g)+2O2(g)      CO2(g)+2H2O(g)

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Keq= [CH] [O2] CO2] [H2O]2

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1.  b.  A reaction in which products can react to re-form reactants
2.  c. Some product and some reactant
3.  answer is with the question
4.  b. fewer moles
5.  c. the middle
6.  true
7.  answer with the question
8.  a. the catalyst lowers the activation energy
9. a. it's unchanged
10. answer is with question
11.
12.
13.
14.
15.