What is the molar mass of #Al_2(SO_4)_3#?
The molar mass of
The atomic mass is
But there are two
Leave this number here for now. We will revisit this later.
Now we have to calculate for
Same thing! Add the atomic masses from the periodic table. Remember there are 4 oxygens per sulfur! Add all those and you should get an answer close to
Wait! There are three sulphates so multiply by 3. The answer should be
The question asks for the molar mass of the two ions I just calculated for. Simply add the two results for your answer :-)