2N2H4 + N2O4 → 3N2 + 4H2O

How many grams of N2H4 will be consumed by 92 g of N2O4?

16 g

128 g

64 g

32 g

With N2O4's molar mass of 92 grams/mole, there is 1 mole of N2O4 being used.

For every one mole of N2O4 used, two moles of N2H4 are used.

2 moles of N2H4 times the molar mass of N2H4 (32g/mol)

2 moles * (32 grams/mole) = 64 grams