Question

Convert into mole : (i) 20 g of water (Given mass hydrogen = 1u, oxygen =16u) (ii) 22 g of carbon dioxide ( Given mass carbon = 12u, oxygen = 16u)

Answer 1

no. of mole = given mass/actual mass

mole=20/18

no. of mole =10/9

2 part

no. of mole = 22/44

no. of mole=0.5