Question

which of the following contains same number of atoms are there in 12 grams of magnesium

Answer 1

Molar mass of Ca=M`= 40

Molar mass of Mg=M=24

Given mass of Ca= m`=8g

Given mass of Mg=m=?

Formula: m= m`× M/ M`

m= 8× 24/40

m= 4.8g

Answer 2

At. mass of magnesium =24g

= 24g × 12 = 288g

At. mas of Carbon=12g

= 12g × 24 = 288g

(C) 24gram of carbon,

is the correct answer..