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How Many Grams of Calcium Hydride Are Required to Produce

Question 145

Multiple Choice

How many grams of calcium hydride are required to produce 2.28 L of hydrogen gas at 25.0°C and 0.975 atm pressure according to the chemical equation shown below?
CaH2(s) + 2 H2O(l) → Ca(OH) 2(aq) + 2 H2(g)


A) 1) 91 g
B) 3) 82 g
C) 7) 64 g
D) 22.8 g

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