How many moles of H2O are needed to react with 15.0g of CaO forming Ca (OH)2

Question

CaO + H2O --> Ca (OH)2

Answer 1

Make sure the equation is balanced.

Convert 15.0 g CaO to mols. mol = grams/molar mass = ?

Now use the coefficients in the balanced equation to convert mols of what you have to mols of what you want.