Convert into moles:
(i)20g of water (ii)20g of carbon dioxide

Explanation

Gram molar mass of water `(H_(2)O)=(2xx1+16)=18g`
18g of watwer represent moles =1mol
20g of water represent moles `=((20g))/((18g))xx(1"mol")=1.11"mol"`
(ii) Gram molar mass of carbon dioxide `(CO_(2))=(12+2xx16)=44g`
44g of carbon dioxide represent moles =1mol
20g of carbon dioxide represent moles=`=((20g))/((44g))xx(1"mol")=0.45"mol"`