# What is the formula mass for the following compound Fe(NO_3)_3?

May 23, 2016

The Formula $F e {\left(N {O}_{3}\right)}_{3}$ has a formula mass of 208.92 g/mol

#### Explanation:

The Formula $F e {\left(N {O}_{3}\right)}_{3}$ has

1 atom Fe = 1 x 55.85 = 55.85
3 atoms N = 3 x 14.01 = 42.03
9 atoms of O = 9 x 15.99 = 143.91

55.85 + 42.03 + 143.91 = 208.92

The Formula $F e {\left(N {O}_{3}\right)}_{3}$ has a formula mass of 208.92 g/mol