Question

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

Answer 1

To find a molar mass of a compound,

Step 1: break the compound up into elements.

If you break `Al(C_2H_3O_2)_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 mol^-1`
C = `12.0 g mol^-1 xx 2 xx 3 = 72.0 g mol^-1`
H = `1.0 g mol^-1 xx 3 xx 3 = 9.0 g mol^-1`
O = `16.0 g mol^-1 xx 2 xx 3 = 96.0 g mol ^-1`

Step 3: Add the molar mass of each elements up and it will give you the molar mass of `Al(C_2H_3O_2)_3`.
`27.0 + 72.0 + 9.0 + 96.0 = 204.0 g mol^-1`

Therefore, the molar mass of `Al(C_2H_3O_2)_3` is `204.0 g mol^-1`