Question

calculate the number of miles present in (ii) 60 g of calcium
(at.mass of O=16, Ca=-40)​

Answer 1

AnswThe number of moles present is 2

Explanation:

2Ca+O2————>2Cao

Answer 2

Explanation:

no.of moles= given mass of element/ molar mass of the element.

so,no. of moles = 60/40

=1.5moles