How much NaCl is needed to make 50.0 mL of a 16% (w/v)solution?
A)2.0 g
B)4.0 g
C)8.0 g
D)12 g
E)16 g

Name: How much NaCl is needed to make 50.0 mL of a 16% (w/v)solution? A)2.0 g B)4.0 g C)8.0 g D)12 g E)16 g
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Question

Quizplus · Accepted Answer

A 16% (w/v) solution means that 16 g of NaCl is present in 100 mL of solution.

To make 50.0 mL of solution, we can use the proportion:

16 g/100 mL = x g/50.0 mL

Solving for x:

x = 8.0 g

Therefore, 8.0 g of NaCl is needed to make 50.0 mL of a 16% (w/v) solution.

How Much NaCl Is Needed to Make 50