For an exothermic reaction, lowering the temperature of the ...

[mp14]

For an exothermic reaction, lowering the temperature of the reaction will ________.
 
  A) increase the amount of products
  B) decrease the amount of reactants
  C) decrease the amount of products
  D) both A and B

Question 2

In 1961, the reference for the atomic mass unit (amu or u) was changed from naturally occurring oxygen with a value of 16.000 u to one based on a single isotope of carbon (carbon-12). Why was it changed?
 
  A) The atomic composition of oxygen varies depending upon its source.
  B) Carbon-12 is more common than oxygen.
  C) Carbon exists as only one isotope, carbon-12.
  D) Carbon can combine with four atoms of hydrogen to form CH4, methane, while oxygen only combines with two atoms of hydrogen to form water, H2O.

[allisonblackmore]

Answer to Question 1

D

Answer to Question 2

A

[mp14]

Gracias!

[bulacsom]

Excellent