# How do we find the formula mass of #"chromic sulfite"#, #Cr_2(SO_3)_3#?

##### 1 Answer

Feb 17, 2017

#### Explanation:

We add the atomic masses of the the given constituents......of

All I have done is to take the atomic masses from the Periodic Table, and added them together appropriately. You are not expected to remember any of the atomic masses (tho' a few will stick).

What is the molar mass of