[FutureProof]

Hello everyone!

I'm doing a project about a pharmaceutical plant and I need to know this and I just can't get there, I feel really dumb :x

How much CaCO3 do I need to add to a solution of H2SO4 0.34 mol/L (pH 0.16) to raise the pH to 4.5?

Can you please help me or point me in the right direction? Thank you!!!