Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl is found in 500. mL of such a solution?
A) 0.45 g
B) 0.89 g
C) 4.5 g
D) 8.9 g

Question

Quizplus · Accepted Answer

0.89%(w/v) means that there are 0.89 g of NaCl per 100 mL of solution.

To find out how much NaCl is in 500 mL of solution, we can set up a proportion:

0.89 g/100 mL = x g/500 mL

Cross-multiplying, we get:

100x = 0.89 * 500

x = 4.45 g

Therefore, there are 4.45 g of NaCl in 500 mL of solution, which rounds to 4.5 g.

So the correct choice is C (4.5 g).

Saline Solutions (NaCl in Water) Used to Deliver Intravenous Drugs