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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is mass percentage?
💡 Hint: Think about how much solute is compared to the total.
Question 2
Easy
Explain what ppm stands for.
💡 Hint: Consider how many parts of solute are in a million parts of solution.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for calculating mass percentage?
- (mass of solute/total mass of solution)*100
- (volume of solute/total volume of solution)*100
- (moles of solute/volume of solution)
💡 Hint: Look for the option that discusses mass.
Question 2
True or False: Molarity can change with temperature.
- True
- False
💡 Hint: Consider how heating a liquid might affect its volume.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A 75 g mass of glucose is dissolved in enough water to make 500 mL of solution. Calculate the molarity and molality of this solution.
💡 Hint: Convert mL of water to kg for molality.
Question 2
Using Raoult's Law, if the vapor pressure of pure solvent (A) is 100 mm Hg, and the mole fraction of A in a solution is 0.6, what is the vapor pressure of the solution?
💡 Hint: Remember that you multiply the mole fraction by the vapor pressure of pure solvent.
Challenge and get performance evaluation