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Home Q & A Board Biology-Related Homework Help Cell Biology
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toni_malvina toni_malvina
wrote...
11 years ago
A 0.150 M sodium chloride solution is referred to as a physiological saline solution because it has the same concentration of salts as a normal human blood. Calculate the mass of solute needed to prepare 275. mL of a physiological saline solution.
Possible answers
 41.3 g
31.9 g
16.1 g
8.77 g
2.41 g
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wrote...
#1
11 years ago
First, a couple important points:

0.150 M = 0.150 mol/L
275 mL = 0.275 L

Convert L Rightwards Arrow mol Rightwards Arrow g

.275 L x (0.150 mol NaCl/L) x (58.5 g NaCl/1 mol NaCl) = 2.41 g
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