Answer to Question #166684 in General Chemistry for Joana Alaniz

Question

There are 14.9 g of nitrogen (N₂) gas. How many moles of gas is this?

Answer 1

Molar mass of N₂

= Atomic mass of N×2 g/mol

= (14×2) g/mol

= 28 g/mol

Given amount of N₂ = 14.9 g

= 14.9/(28 g/mol)

= 0.532 mol

So, this is 0.532 mol gas.