How many grams of water react to form 6.21 moles of Ca(OH)2 in CaO(s)+H2O(l)→Ca(OH)2(s)?
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Answer:
111.6 grams
Explanation:
We will apply the concept of mole ratio to solve this question.
The mole ratio of H2O to Ca(OH)2 in the reaction above is 1 : 1.
This means that the moles of H2O that reacts to form Ca(OH)2 are 6.2 moles.
Molar mass of water = 16 + 2 = 18 grams per mole
Moles = mass/molar mass
6.2 moles = mass/18
Mass = 18 × 6.2 = 111.6 grams
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