Question

A sample of N₂O contains 3.75×10²³ molecules. How many moles of N₂O are present?

Find the mass of the sample in Part 1. 

Answer 1

no. of moles of N₂O present = $\frac{3.75×10^{23}}{6.022×10^{23}}$

= 0.622 mol

Mass of N₂O = 0.622 × 44.013 = 27.376g