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asmita9876
17.12.2019 •
Chemistry
Consider the complete reaction of 43.0 g of silicon with excess nitrogen gas in the reaction shown below. what mass of product forms? 3si + 2n2 → si3n4 answer = grams of product
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Ответ:
according to reaction 3 moles of Si gives 1 mole of Si3N4
so 1.53 mole of Si will give 1.53/3 = 0.51 mole of Si3N4
molar mass of Si3N4 = 140.28 g/mole
it means that 1 mole of Si3N4 = 140.28 g
so 0.51 mole of Si3N4 = 0.51 X 140.28 = 71.543 g
Ответ: