Chemistry
posted by Nicole .
how many mililiters of a 0.4 molar HCl solution are needed to react completely with 13 grams of zinc according to the following equation?
Equation.
2 HCl + 1 Zn > 1 ZnCl2 + 1 H2

1. Convert 13 g Zn to moles. moles = grams/molar mass.
2. Using the coefficients in the balanced equation, convert moles Zn to moles HCl.
3. Now convert moles HCl to volume.
M= moles/L. You know moles and M, calculate L and convert to mL.
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