Answer:
The answer is
33.6 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 solution = 40.0 mL
density = 0.84 g/mL
The mass of the solution is
mass = 40 × 0.84
We have the final answer as
33.6 g
Hope this helps you