Asked by Jack

What mass of chromium II chlroide (CrCl2) is dissolved in 150.0mL of solution to prepare .250M solution?

Please Help
Answered by DrBob222
How many mols do you need? That's M x L = mols.
Then mols = grams/molar mass. You knopw mols and molar mass, solve for grams.
Answered by Jack
g=.00461 ?
Answered by DrBob222
I don't think so. I think that is off by a factor of 1000. You can check yourself this way.
mols CrCl2 = 0.00461g/122.9.
Then M = mols/0.150 and that is not 0.25M.
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