Moles of H2O = 10 moles
Given
5 moles O2
Required
Moles of H2O
Solution
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
Reaction make water
2H2 + O2 → 2H2O
From the equation, mol ratio O2 : 2H2O = 1 : 2 so moles H2O :
= 2/1 x moles O2
= 2/1 x 5 moles
= 10 moles