AP EAMCET Engineering 2014 Code A Solved Paper

100g of metal oxide will contain 40 g oxygen and 60g metal.
Number of moles of oxygen ‌

40g

16g∕mol

=2.5mol
The valency of metal is 2 . The formula of metal oxide will be MO.
Hence, number of moles of metal = number of moles of oxygen =2.5mol
The atomic weight of the metal is- ‌

60

2.5

=24g∕mol