Lesson 4.1 Percentage by Mass, Volume, and Mass/Volume

Question 1

-amount of solute present in a solution

-portion of a substance with respect to the whole solution

Answer 1

Concentration

Question 2

-unit for alcohol concentration

-two times the percentage by volume of the alcohol in the solution

Answer 2

Proof

Question 3

What is the formula for Percentage by Mass?

Answer 3

% m/m = mass solute ÷ mass solution × 100%

Question 4

What is the formula for Percentage by Volume?

Answer 4

% v/v = volume solute ÷ volume solution × 100%

Question 5

What is the formula for Percentage by Mass/Volume?

Answer 5

% m/v = mass solute (grams) ÷ volume solution (mL) × 100%