Question 14.7: What is the molarity of a solution made by dissolving 2.00 g...

What is the molarity of a solution made by dissolving 2.00 g of potassium chlorate in enough water to make 150. mL of solution?

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Knowns      mass KClO_3 = 2.00  g
volume = 150. mL
molar mass KClO_3 = 122.6 g/mol

Solution map:  \frac{g   KClO_3}{mL} → \frac{g   KClO_3}{L} → \frac{mol    KClO_3}{L} =M

CALCULATE    (\frac{2.00   \cancel{g  KClO_3}}{150.   \cancel{mL}})   (\frac{1000  \cancel{mL}}{L})   (\frac{1   mol   KClO_3 }{122.6  \cancel{g  KClO_3}})  = \frac{0.109   mol}{L}

=0.109 M KClO_3

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