How many moles of h2o will be produced from 2.9 g of HCl reacting with Ca (OH) 2?

0.080 mol

Explanation:

M (HCl) = (1.0 + 35.5) g/mol = 36.5 g/mol

2.9g*1mol/36.5 g = 0.0795 mol HCl

Ca (OH) 2 + 2HCl - --> CaCl2 + 2H2O

from reaction 2 mol 2 mol

given 0.0795 mol x mol

x = 0.0795 mol ≈0.080 mol