How Many Grams of Calcium Hydride Are Required to Produce

question 130

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 bar according to the chemical equation shown below? CaH₂(s) + 2H₂O(l) → Ca(OH) ₂(aq) + 2H₂(g)

• A) 3.77 g
• B) 7.64 g
• C) 15.3 g
• D) 45.6 g

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