Question

What is the mass in kg of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml? Report the result with the correct number of significant figures?

Answer 1

Given data:

Volume of glucose solution = 2.00 L

Density of glucose = 1.15 g/ml = 1.15 * 10^3 g/L

Density of a substance is the amount of that substance present in a unit volume. i.e.

Density = Mass/volume

Therefore, Mass of glucose = Density of glucose solution * Volume of the solution

= 1.15 * 10^3 g/L * 2.00 L = 2.30*10^3 g

Now,

10^3 g = 1 kg

therefore a mass of 2.30*10^3 g = 1 kg * 2.30*10^3 g/10^3 g = 2.30 kg