Question

The mass of a solute versus the volume of a solution is known as mass/volume percent. It is a unit for concentration (g/L x 100%) often used in medicine, particularly with intravenous (IV) bags. If the mass percent of the saline is 0.9%, how many grams of “salt” are in a 1 L saline IV solution? Show your calculations. Retain all units where appropriate in your calculations. [HINT: 1% is the same as 1 gram in 100ml.]

Answer 1

Given volume, V = 1L * (1000 mL / 1L) = 1000 mL

Since mass volume percent is 0.9%, 0.9 g salt is present in 100 mL saline

=> mass of salt present present in 1L (1000 mL) = (0.9 g / 100 mL) *1000 mL = 9 g (answer)