How many grams of water are needed to react, Chemistry

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How many grams of water are needed to react

Calcium carbide, CaC2 reacts with water to form acetylene.

CaC2(s)+2H2O(l) ==> C2H2(g)+ Ca(OH)2(s)

a)how many grams of water are needed to react with 485g of calcium carbide?
b)how many grams of CaC2 could make 23.6g C2H2?
c)If 55.3 g Ca(OH)2 are formed, how many grams of water reacted?

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Chemistry: How many grams of water are needed to react

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Chemistry: How many grams of water are needed to react

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