Question

Liquids are commonly measured using volume (mL or cm3). However, we can also measure amounts of liquid in terms of weight (grams) if the density of the liquid is known (at a given temperature) since density = mass/volume. What would be the mass of a 250mL volume of ethylene glycol if the density of ethylene glycol is 1.1gcm-3?

Answer 1

275 grams

Explanations:

The formula for calculating the density of a liquid is given as:

`density=(mass)/(volume)`

Given the following parameters

`\begin{gathered} density=1.1gcm^(-3) \\ volume=250mL=250cm^3 \end{gathered}`

Determine the mass

`\begin{gathered} mass=density* volume \\ mass=\frac{1.1g}{\cancel{cm^3}}*250\cancel{cm^3} \\ mass=275grams \end{gathered}`

Hence the mass of ethylene glycol is 275 grams