Question

deduce the number of molecules in the compound in the given quantity 32 gram of oxygen

Answer 1

mass of O₂= 16g

∴no.of molecules in 16g of O₂= avogadro no.

                                                 = 6.022×10²³

no. of molecules in 32g = 6.022×10²³×32/16

= 6.022×10²³×2

=12.044×10²³

hope this helps