How much NaCl is present in a 15.0 mL sample of a 12.0% (w/v)solution?
A)1.80 g
B)12.0 g
C)15.0 g
D)0.800 g
E)1.25 g

Name: How much NaCl is present in a 15.0 mL sample of a 12.0% (w/v)solution? A)1.80 g B)12.0 g C)15.0 g D)0.800 g E)1.25 g
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Question

Quizplus · Accepted Answer

12.0% (w/v) solution means that there are 12 grams of NaCl in 100 mL of solution.
So, in 15.0 mL of solution, the amount of NaCl would be:

(12 g NaCl / 100 mL of solution) x (15.0 mL of solution) = 1.80 g of NaCl

Therefore, the correct answer is A) 1.80 g.

How Much NaCl Is Present in a 15