Q. A liquid mixture of O₂, CH₄ and CO has the composition 32% O₂, 16% CH₄ and 52% CO, then what is the mole fraction of CH₄?

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Q. A gaseous mixture is composed of 20% CO₂, 40% O₂ and 40% N₂. What is the mass fraction of N₂?

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Q. A liquid mixture composed of 20% CH₄, 30% C₂H₄, 35% C₂H₂, and 15% C₂H₂O. What is the average molecular weight of the mixture?

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Q. A gaseous mixture composed of 20% CH₄, 30% C₂H₄, 35% C₂H₂, and 15% C₂H₂O. What is the average molecular weight of the mixture?

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Q. The mole percent of H₂ and N₂ in a mixture is 50% each, what is the mass percentage of H₂?

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Q. The mole percent of CO₂ and H₂O in a mixture is 40% and 60% respectively, what is the mass percent of CO₂?

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Q. A mixture contains 20% CO₂, 30% SO₂ and 50% H₂O, what is the mass percent of CO₂?

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Q. A mixture contains 20% NaCl, 30% CH₄ and 50% H₂O, what is the mass percent of NaCl?

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Q. A mixture contains 10% CO, 40% CO₂ and 50% H₂O, what is the mass percent of CO₂?

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Q. Which of the following is not the unit of concentration?

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Q. What is the concentration of a 22 grams of carbon dioxide occupying 0.5 m³ volume?

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Q. What is the concentration of 100 lbs. of solution occupying 25 m³ of volume?

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Q. What is the molarity of a solution with mass of solute 10 kg mass and 100 liter volume?

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Q. What is the concentration of a solution with 10 grams of calcium in 1000 m³ of water?

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Q. How much Sodium is there in a solution with 10 Kg of solvent (Density = 5 Kg/m³) and concentration 4 molar?

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Q. A 5 molar solution is 27.75% CaCl₂ by mass, what is the density of the solution?

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Q. A solution with density 1 g/cm³ has 98 grams of H₂SO₄ in 402 grams of water, what is the concentration of solution?

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Q. A solution with density 2 g/cm³, concentration 1 molar and weight 500 grams, then what is the mass of HNO₃ in the solution?

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Q. What is the molarity of the mixture of two solution, first solution 4 M and 10 liter and second solution 2 M and 40 liter?

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Q. What is the molar concentration of a solution with 40 gram of NaOH in 1 liter solution?

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