Answer: The mass of acetone is 22.50 grams.
Explanation:
Density : It is defined as the mass contained per unit volume.
To calculate mass of a substance, we use the equation:
[tex]\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}[/tex]
We are given:
Density of acetone = [tex]0.7857g/mL[/tex]
Volume of acetone = 28.64 mL
Putting values in above equation, we get:
[tex]0.7857g/mL=\frac{\text{Mass of acetone}}{28.64cm^3}\\\\\text{Mass of acetone}=22.50g[/tex]
Hence, the mass of acetone is 22.50 grams.