Chemistry question HELP?

Question

A 1.50g sample of nitrous oxide (an anesthetic, sometimes called laughing gas) contains 2.05 * 10^22 N2O molecules. how many nitrogen atoms are in 1.00g of nitrous oxide?

Answer 1

There are 2 nitrogens per nitrous oxide molecule:
They told you how many N2O molecules in 1.5g:

So # of nitrogen atoms in 1g of N2O:

[2.05 x 10^22]molecules x 2 Natoms/molecule x 1g/1.5g =

2.73 x 10^22 N atoms

Answer 2

Assuming the information given is correct, this is an extremely simple problem. 1.00g is 0.667 (2.00/3.00) of 1.50g, so it contains 2.73 × 10²² N atoms (in 1.37 × 10²² N₂O molecules).