Answer
NH2
Work Step by Step
Since we are given percents, we assume a 100g basis to make the masses easy to calculate. Then we have
87.5g N and 12.5g H
Now we need these in moles:
N is 14g/mol so 87.5g is 6.25 moles
H is 1g/mol so 12.5g is 12.5 moles
Then we divide both by the smaller number to find the ratio
6.25/6.25 = 1
12.5/6.25 =2
The ratio is 1:2 so we have
NH2
