Homework Help: Chemistry

Posted by Kevin on Thursday, February 2, 2012 at 8:03pm.

If a 45.3-g sample of potassium nitrate is dissolved in enough water to make 225 mL of solution, what will be the molarity?

Chemistry - Anonymous, Wednesday, March 7, 2012 at 3:15am
moles KNO3 = 45.3 g /101.1 g/mol=0.448
M = 0.448/ 0.225 L=1.99

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