1. To make the following saline solution (375ml 0.5% w/v sodium chloride) what would you weigh out?

Question

What volume of water would you use?

Answer 1

0.5% w/v NaCl means 0.5 g NaCl/100 mL soln.
If you want 375 mL soln instead of 100 mL soln, just proportion it up.
0.5 g x (375/100) = ? g NaCl in 375 mL solution.

Answer 2

I would like to know what volume of water you use?
How to calculate the volume of water?