Practice - Mole Fraction
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Practice Questions
Test your understanding with targeted questions
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).
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.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the mole fraction of a component in a solution?
💡 Hint: Think about how it relates to the total amount of substance present.
True or False: The sum of all mole fractions in a solution always equals 1.
💡 Hint: Consider how parts relate to a whole.
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Challenge Problems
Push your limits with advanced challenges
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.
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.
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