Question

calculate the percentage composition of ammonia (N-14,H-1)​

Answer 1

Answer:

First of all you will want to add the atomic mass for all the elements in NH3

This can be readily obtained with a periodic table.

Let's take the elements and add their masses up:

14.007 + 1.008(3) = 17.031

Now we will divide each individual atom with the mass we got in step one and multiply by 100.

14.007/17.031 x 100 = 82.24414...%

1.008(3)/17.031 x 100 = 17.75586...%

Therefore, we can say there is 82.24% of N and 17.76% of H