Jim needs to prepare one liter of a 4% NaCl solution.How much NaCl should he weigh out?
A)0.4 grams
B)4.0 grams
C)40 grams
D)400 grams

Question

Quizplus · Accepted Answer

A 4% NaCl solution means that there are 4 grams of NaCl in every 100 grams of solution. To prepare a one liter (1000 ml) solution, we need to calculate how many grams of NaCl are needed:

4 grams NaCl ÷ 100 ml solution = x grams NaCl ÷ 1000 ml solution

x = (4 grams NaCl × 1000 ml solution) ÷ 100 ml solution

x = 40 grams NaCl

Therefore, Jim needs to weigh out 40 grams of NaCl to prepare one liter of a 4% NaCl solution.

Jim Needs to Prepare One Liter of a 4% NaCl