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August 31, 2014

Homework Help: chemistry

Posted by ellen on Tuesday, July 20, 2010 at 2:18pm.

need help with these problems:

The concentration of glucose in blood is usually about 0.10% (w/v). If 7.0 L of blood are in an average man, how many grams of glucose are in his blood?

To obtain the solute for 118 g of a 19.2% (w/w) solution of sugar we would weigh out ________ g of sugar.

How many moles of sodium chloride are in 993 mL of a 2.88 M solution of sodium chloride?

A salt solution is evaporated to dryness. If 79.4 g of the solution leaves 1,015 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution?

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