Question

if one mole of nitrogen molecule weighs 28 g calculate the mass of one molecule of nitrogen in grams.

Answer 1

We know that 1 mole = 6.023 * 10^23

Molar mass of Nitrogen is 2 * 14 = 28kg.

So, mass of one molecule of nitrogen = 28/6.023 * 10^23
 
                                                                = 4.65 * 10^-23 g


Hope this helps!