Answer:
The answer is
78.5 g
Step-by-step explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question
volume of rubbing alcohol = 100 mL
Density = 0.785 g/mL
The mass of the rubbing alcohol is
mass = 0.785 × 100
We have the final answer as
78.5 g
Hope this helps you