Question

"Ammonia is a compound of nitrogen and hydrogen and the atomic ratio is 1:3. A sample of ammonia contains 7.933g N and 1.712g H. What is the atomic mass of N relative to H?" someone please slow this down for me.

Answer 1

if i understand correctly, this is asking you to assume the mass of H in the sample to be 1.

so to find the relative atomic mass of N in terms of H, you simply divide the mass of N by the mass H:

mass of N/mass of H = relative mass

then multiply by 3 since thats their ratio.