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Answer to Question #144051 in General Chemistry for Lucas
Question #144051
Calcium hydride, CaH2, reacts with water to form hydrogen gas:
CaH2(s) + 2 H2O(l) Ca(OH)2(aq) + 2 H2(g)
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, when a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 145 L of H2 gas if the pressure of H2 is 825 torr at 21oC?
CaH2(s) + 2 H2O(l) Ca(OH)2(aq) + 2 H2(g)
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, when a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 145 L of H2 gas if the pressure of H2 is 825 torr at 21oC?
Expert's answer
"137.01g"
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