what mass of SO3 is produced from the reaction of 17.4g of SO2 and 6.45g of O2 find out much of the excess reactant you have left.

6.37

Explanation:

How many moles of sulfate ions are present in 1.5 moles of Al2(SO4)3?

And I can't explain it right so I let you know that I had to do it in a calculator

answer carbon and three oxygen atoms;