A solute with a density of 1.15 g/mL and mass of 45.95 g is dissolved in 250. mL of water. What is the volume of the solute and what is the volume percent (v/v)?

Question

• 40.0 mL, 16.0%
• 40.0 mL, 13.8%
• 49.95 mL, 20.0%
• 57.4 mL, 23.0%

Answer 1

To find the volume of the solute, we can use the formula:

Volume (V) = Mass (m) / Density (d)

V = 45.95 g / 1.15 g/mL
V = 39.96 mL

The volume of the solute is approximately 40.0 mL.

To find the volume percent (v/v), we can use the formula:

Volume Percent (v/v) = (Volume of Solute / Total Volume) x 100

V/V = (40 mL / 250 mL) x 100
V/V = 0.16 x 100
V/V = 16.0%

Therefore, the correct answer is 40.0 mL, 16.0%.