Find the % N in Ca (NO3) 2. Write your final answer to the hundredths.

To find the % of nitrogen in the compound, must first find the formula mass of the compound through the following process.

Ca=40

N=14

O=16

Thus, formula mass = 40 + (14+16*3) * 2

=40 + 124

=164

The mass of nitrogen in 1 mole of the compound = 14*2=28

thus to get the % of nitrogen we use the following expression

(28/164) * 100% = 17.07%