Question

How many moles of oxygen atoms are present in 1 mole of the following :- (a)CO2 (b)H2SO4 (c)AL2O3 (d)AL2(SO4)3

Answer 1

(a) we see 1 molecule of CO2 contains two oxygen atoms. so, 1 mole of CO2 molecule contains $\textbf{2 mole of oxygen atoms}$.

(b) 1 molecule of H2SO4 contains 4 atoms of oxygen so, 1 mole of H2SO4 contains $\textbf{4 mole of oxygen atoms}$.

(c) 1 molecule of Al2O3 contains 3 atoms of oxygen. so, 1 mole of Al2O3 contains $\textbf{3 mole of oxygen atoms}$ .

(d) 1 molecule of Al2(SO4)3 contains 12 oxygen atoms so, 1 mole of Al2(SO4)3 contains $\textbf{2 mole of oxygen atoms}$.

Answer 2

please see the first answer