How many grams of i2 are needed

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2I2 + N2H4 → 4HI + N2
a. How many grams of I2 are needed to react with 36.7 g of N2H4?
b. How many grams of HI are produced from the reaction of 115.7 g of N2H4 with excess iodine?

Reference no: EM13131139

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