How many milliliters of a 0.5 molar HCl solution are needed to react completely with 15 grams of zinc according to the following equation?

Question

? HCl+? Zn→? ZnCl2 +? H2 Answer in units of mL

Answer 1

Balance the equation first.
mols Zn = grams/molar mass
Using the coefficients in the balanced equation convert mols Zn to mols HCl.
Then M HCl = mols HCl/L HCl. You know M HCl and mols HCl, solve for L HCl and convert to mL.