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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the mole fraction of CO2 in a mixture of 2 moles of CO2 and 3 moles of O2.
💡 Hint: Use the formula x = n_A / (n_A + n_B).
Question 2
Easy
If you have 5 moles of NaCl in a total of 20 moles of solution, what is the mole fraction of NaCl?
💡 Hint: Remember to total the moles before calculating.
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 mole fraction of a component in a solution?
💡 Hint: Think about how it relates to the total amount of substance present.
Question 2
True or False: The sum of all mole fractions in a solution always equals 1.
- True
- False
💡 Hint: Consider how parts relate to a whole.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A solution consists of 50 grams of KCl dissolved in 200 grams of water. Calculate the mole fraction of KCl and water in the solution.
💡 Hint: First, convert the mass into moles.
Question 2
In a mixture of two gases, if the partial pressures are 0.5 atm for gas A and 1 atm for gas B, determine the mole fractions of gases A and B. Assume total pressure is 1.5 atm.
💡 Hint: Remember, the total pressure is crucial for calculating mole fractions.
Challenge and get performance evaluation