Posted by **Nicole** on Tuesday, July 13, 2010 at 1:54am.

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

- Chemistry -
**DrBob222**, Tuesday, July 13, 2010 at 11:59am
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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