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Questions and Answers
What is the definition of mole fraction of a component in a solution?
What is the definition of mole fraction of a component in a solution?
- Total mass of the component
- Number of atoms of the component
- Number of moles of the component divided by total number of moles of all components (correct)
- Number of grams of the component
In a binary mixture, if the number of moles of components A and B are nA and nB respectively, what is the mole fraction of A?
In a binary mixture, if the number of moles of components A and B are nA and nB respectively, what is the mole fraction of A?
- nA/nB
- nA/(nA + nB) (correct)
- nA + nB
- nA * nB
What does the sum of all mole fractions in a solution equal to?
What does the sum of all mole fractions in a solution equal to?
- 0
- 2
- 1 (correct)
- -1
If a solution contains 20% ethylene glycol by mass, what is the mole fraction of ethylene glycol assuming 100g of solution?
If a solution contains 20% ethylene glycol by mass, what is the mole fraction of ethylene glycol assuming 100g of solution?
How can mole fraction be useful in describing gas mixtures?
How can mole fraction be useful in describing gas mixtures?
What would be the mole fraction unit when relating physical properties of solutions?
What would be the mole fraction unit when relating physical properties of solutions?
What is the mole fraction of toluene in the given binary mixture?
What is the mole fraction of toluene in the given binary mixture?
What is the major component of air by volume at 298 K, according to the given information?
What is the major component of air by volume at 298 K, according to the given information?
Calculate the molarity of the CaCl2 solution when dissolved in 2.5 liters of water.
Calculate the molarity of the CaCl2 solution when dissolved in 2.5 liters of water.
What is the mass of K2SO4 dissolved in water to prepare the given solution?
What is the mass of K2SO4 dissolved in water to prepare the given solution?
Determine the osmotic pressure of the solution prepared with 25 mg of NaCl in 2 liters of water at 25°C.
Determine the osmotic pressure of the solution prepared with 25 mg of NaCl in 2 liters of water at 25°C.
If a binary mixture has a mole fraction of benzene as 0.325, what is the mole fraction of toluene in the mixture?
If a binary mixture has a mole fraction of benzene as 0.325, what is the mole fraction of toluene in the mixture?
What is the mole fraction of water in the given mixture?
What is the mole fraction of water in the given mixture?
How many moles of NaOH are present in a 450 mL solution that has a molarity of 0.278 M?
How many moles of NaOH are present in a 450 mL solution that has a molarity of 0.278 M?
What is the mass of water in kilograms needed to make a 1.00 m solution of KCl with 1 mol of KCl?
What is the mass of water in kilograms needed to make a 1.00 m solution of KCl with 1 mol of KCl?
If the molarity of a solution is 0.25 M, how many moles of solute are present in 2 liters of the solution?
If the molarity of a solution is 0.25 M, how many moles of solute are present in 2 liters of the solution?
What does a 0.322 mole fraction of water imply in a binary mixture?
What does a 0.322 mole fraction of water imply in a binary mixture?
