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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