Posted by Cynthia on Wednesday, February 22, 2012 at 9:43pm.
How many mols do you need? That is M x L = 1.28M x 0.220L = ?
Then mol = g/molar mass. You know molar mass and you know mols, solve for grams.
M*L = 1.28M*0.220L = 0.282mols
molar mass = 126g
126g*0.282 = 35.5g
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