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, where a simple, compact means of generating H2 is desired. How many grams ofCaH2 are needed to generate 15.0 L of H2 gas if the pressure of H2 is 740. torr at 16°C?
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