how many grams of calcium bicarbonate would it take to reach a ph of 7 if i have 10ml 3 molar sulfuric acid?

Answer 1

Ca(HCO3)2 + H2SO4 ==> 2H2O + 2CO2 + CaSO4

I presume your pH 7 part assumes that is the pH at the equivalence point.
mols H2SO4 = M x L = ?
mols Ca(HCO3)2 = mols H2SO4 and you tell that by looking at the coefficients in the balanced equation.
Then grams = mols x molar mass Ca(HCO3)2.

Answer 2

i think you meant carbonate not bicarbonate