Answer:-
5
Explanation:-
Chemical formula for calcium oxide = CaO
Chemical formula of water = H2O
Chemical Formula of Calcium Hydroxide = Ca(OH)2
Mass of Ca(OH)2 = 370g
Molar mass of Ca(OH)2 = 40 x 1 + ( 16 x 1 + 1 x 1 ) x 2
= 74 g mol-1
Number of moles of Ca(OH)2 = 370 g / 74 g mol-1
= 5 moles
The balanced chemical equation for this process is
CaO + H2O --> Ca(OH)2
From the equation we see
For 1 mol of Ca(OH)2 to form, 1 mol of CaO is needed to react.
For 5 mol of Ca(OH)2 to form, 5 x 1 / 1 = 5 mol of CaO is needed to react.
