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How Many Grams of Calcium Hydride Are Required to Produce

Question 158

Multiple Choice

How many grams of calcium hydride are required to produce 4.56 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) 3) 82 g
B) 7) 64 g
C) 15.3 g
D) 45.6 g

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