Posted by Ty on Wednesday, March 24, 2010 at 10:46pm.
First, calcium chloride is CaCl2.
Second, 0.500 g is not very much H2O to be using to prepare any kine of solution. Check your problem and your post.
You want 1.5 m solution. The definition is
m = mols/kg solvent
1.5m=moles/kg. I don't know if that is 0.5 grams or 0.5 kg. You substitute whatever goes there.
Solve for moles, then substitute into the following:
moles = grams/molar mass and calculate grams.
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