For the reaction N2 + 3 H2 --> 2 NH3

Which of the following statements is FALSE?

1 mole of N2 reacts with 3 moles H2 to make 2 moles NH3
or
1 molecule of N2 reacts with 3 molecules H2 to make 2 molecules NH3
or
1 gram of N2 reacts with 3 grams H2 to make 2 grams NH3
or
All of the above statements are TRUE.