Posted by Monique on Sunday, November 6, 2011 at 1:30am.
88.4 g KNO3 = ? moles. moles = grams/molar mass = 88.4/molar mass KNO3 = about 0.88 moles. In a total volume fo 1.50 L, that will be 0.88/1.5 = ?M.
For mass percent, that is mass/100 g sample.
(88.4/mass soln)*100 = ?
Convert 1.50L volume to mass using density, ans substitute in the mass percent equation, solve for mass percent.
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