Posted by **Anonymous** on Sunday, February 26, 2012 at 6:03pm.

How many milliliters of a 5.0 M H2SO4 stock solution would you need to prepare 132.0 mL of 0.21 M H2SO4?

- chemistry -
**DrBob222**, Sunday, February 26, 2012 at 6:08pm
How many mols do you need? That is M H2SO4 x L H2SO4 = ?

Then mL x M = moles Substitute the dilute numbers and solve for the unknown.

You can use the dilution formula, also, if that is easier for you.

c1v1 = c2v2

c = concn

v = volume

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