# Chemistry Stoichiometry

Question:

N$$_2$$ + 3 H$$_2$$ $$\longrightarrow$$ 2 NH$$_3$$

How many grams of hydrogen are needed to produce 68 g of ammonia? (molar mass of NH$$_3$$ = 12.031 g/mol, the molar mass of H$$_2$$ = 2.015 g/mol)

Subject: