Answer to Question #117462 in General Chemistry for Ellie

Question

N2 + 3 H2 = 2 NH3
How many grams of Hydrogen are needed to make 4 moles of NH3?

Answer 1

M(H₂) = 2.016 g/mol;

Proportion according to reaction:

3 moles (H₂) – 2 moles (NH₃)

x moles – 4 moles

x = 6 moles;

m = n×M;

m(H₂) = 6 moles × 2.016 g/mol = 12.096 g

Answer: 12.1 g