Multiple Choice
Calcium hydride (
) reacts with water to form hydrogen gas: CaH2(s) + 2 H2O(l) → Ca(OH) 2(aq) + 2 H2(g)
How many grams of
are needed to generate 45.0 L of
gas at a pressure of 0.888 atm and a temperature of 32°C?
A) 47.5 g
B) 0.798 g
C) 134 g
D) 33.6 g
E) 67.2 g
Correct Answer:

Verified
Correct Answer:
Verified
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