________ are used in automotive catalytic converters. A) ...

[kshipps]

________ are used in automotive catalytic converters.
 
  A) Heterogeneous catalysts
  B) Homogeneous catalysts
  C) Enzymes
  D) Noble gases
  E) Nonmetal oxides

Question 2

There are ________ molecules of methane in 0.123 mol of methane (CH4).
 
  A) 5
  B) 2.46  10-2
  C) 2.04  10-25
  D) 7.40  1022
  E) 0.615

[jojobee318]

Answer to Question 1

A

Answer to Question 2

D

[kshipps]

TYSM

[fatboyy09]

Great answer, keep it coming