Question

A flask with a volume of 125.0 mL contains air with a density of 1.122 g/L. What is the mass of the air contained in the flask?

Answer 1

The answer is

0.14 g

Step-by-step explanation:

To find the mass of a substance given the density and volume we use the formula

mass = Density × volume

From the question

Density = 1.122 g/L

volume = 125 mL

We must convert the volume from mL to L

1000 mL = 1 L

125 mL = 0.125 L

volume = 0.125 L

Substitute the values into the above formula and solve for the mass

That's

mass = 1.122 × 0.125 = 0.14025

We have the final answer as

0.14 g

Hope this helps you