# What is the molar mass of Al(C_2H_3O_2)_3?

##### 1 Answer
Nov 30, 2016

To find a molar mass of a compound,

Step 1: break the compound up into elements.

If you break $A l {\left({C}_{2} {H}_{3} {O}_{2}\right)}_{3}$, you can see that it is made up of Al, C, H and O atoms.

Step 2: Find the molar mass of the elements involved. If you look into your periodic table, you could identify the molar mass right away.
Al = $27.0 g m o {l}^{-} 1$
C = $12.0 g m o {l}^{-} 1 \times 2 \times 3 = 72.0 g m o {l}^{-} 1$
H = $1.0 g m o {l}^{-} 1 \times 3 \times 3 = 9.0 g m o {l}^{-} 1$
O = $16.0 g m o {l}^{-} 1 \times 2 \times 3 = 96.0 g m o {l}^{-} 1$

Step 3: Add the molar mass of each elements up and it will give you the molar mass of $A l {\left({C}_{2} {H}_{3} {O}_{2}\right)}_{3}$.
$27.0 + 72.0 + 9.0 + 96.0 = 204.0 g m o {l}^{-} 1$

Therefore, the molar mass of $A l {\left({C}_{2} {H}_{3} {O}_{2}\right)}_{3}$ is $204.0 g m o {l}^{-} 1$