In the gaseous state, chlorine exists as a diatomic molecule cl2 (molar mass = 70.9 g/mol).calculate the number of moles of chlorine present in 140 g of chlorine gas.

Answer : The moles of chlorine present in 140 grams of chlorine gas are 3.96 moles.

Explanation : Given,

Mass of = 140 g

Molar mass of = 70.9 g/mol

Formula used :

Now put all the given values in this formula, we get:

The number of moles of chlorine in = 2 × 1.98 = 3.96 mole

Therefore, the moles of chlorine present in 140 grams of chlorine gas are 3.96 moles.