What is the mass percent of N in Ca(NO3)2 2.

I am studying for my chemistry exam tomorrow, i need help with these questions and if you can give me a detailed response please.

1.What is the mass percent of N in Ca(NO3)2

2.Ionic,molecular compounds

3. naming compounds

4.How many Ca atoms are in 10gCa(NO3)2?

5.How many molecules of H2O is in 2g of H2O?

6.Great atomic weight w/ abundances

7.Find density

8. convert to milliliters

9. Physical & compound properties

10.P=15 electron P3-

11. difference between main group elements and transition metals

1.What is the mass percent of N in Ca(NO3)2 = (2 ∗ )(2 ∗ 14)== 17.07 % (3)240 + 2 ∗ 14 + 6 ∗ 16 2.Ionic,molecular compoundsIt is molecular compound3. naming compoundsCalcium nitrate...