13-05-2016
Chemistry

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What mass of anhydrous solute is needed to prepare 500 mL of 0.032 M NaF(aq)? Answer in units of g.

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Willchemistry Willchemistry

13-05-2016

Volume 500 mL in liters : 500 / 1000 = 0.5 L

Molar Mass NaF = 41.98 g/mol

Molarity = 0.032 M

Mass = Molarity * molar mass * volume

Mass = 0.032 * 41.98 * 0.5

= 0.67168 g of NaF(aq)

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