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Class 11 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryA solution contains 58.5 g sodium chloride and 180 g water. What is the approximate mole fraction of sodium chloride?Class 11Chapter 01: SolutionsLevel 6MediumChemistry20 g solute is dissolved in 180 g water. What are the mass percentages of solute and solvent respectively?Class 11Some Basic Concepts of ChemistryPercentage composition and empirical/molecular formulasLevel 4EasyChemistryWhat is the approximate mole fraction of glucose in a 2 molal aqueous glucose solution?Class 11Chapter 01: SolutionsLevel 8MediumChemistryA solution has solute mole fraction 0.02. If the solvent is water, what is the approximate molality?Class 11Chapter 01: SolutionsLevel 10HardChemistryWater contains 9 ppm dissolved oxygen. What is the approximate mass of oxygen in 500 mL water?Class 11Chapter 01: SolutionsLevel 6MediumChemistryThe mole fraction of water in a solution is 0.9. If moles of water are 9, how many moles of solute are present?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 7MediumChemistryA solution has 10 percent solute by mass. What is the mass percent of solvent in the same solution?Class 11Chapter 01: SolutionsLevel 3EasyChemistryA 2 L solution has solute concentration 300 mg per litre. What is the approximate ppm if the solution is dilute and aqueous?Class 11Chapter 01: SolutionsLevel 5EasyChemistryIf a solution is heated and its volume increases while moles of solute remain the same, what happens to molarity and molality?Class 11Chapter 01: SolutionsLevel 5EasyChemistryWhich statement about concentration units is most correct?Class 11Chapter 01: SolutionsLevel 4EasyChemistry46 g ethanol is mixed with 90 g water. Molar masses are 46 and 18 g mol−1, respectively. What is the mole fraction of ethanol?Class 11Chapter 01: SolutionsLevel 6MediumChemistry32 g methanol is mixed with 84 g water. Molar masses are 32 and 18 g mol−1, respectively. What is the approximate mole fraction of methanol?Class 11Chapter 01: SolutionsLevel 7MediumChemistryThe mass fraction of solute is 0.12. What is the mass percentage?Class 11Chapter 01: SolutionsLevel 4EasyChemistryA solution is made from 15 g solute and 85 g solvent. What is the mass fraction of solute?Class 11Chapter 01: SolutionsLevel 4EasyChemistry6 g solute is dissolved in 94 g solvent. What is the mass percentage?Class 11Chapter 01: SolutionsLevel 4EasyChemistryIf the mole ratio of solute to solvent is 3:2, what is the mole percent of solvent?Class 11Chapter 01: SolutionsLevel 5EasyChemistryIf the mole ratio of solute to solvent is 1:4, what is the mole fraction of solute?Class 11Some Basic Concepts of ChemistryPercentage composition and empirical/molecular formulasLevel 5EasyChemistryThe mole fraction of solute is 0.1. If total moles are 40, how many moles of solvent are present?Class 11Chapter 01: SolutionsLevel 5EasyChemistryIn a binary solution, the mole fraction of solvent is 0.75 and moles of solute are 3. How many moles of solvent are present?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2MediumChemistryIf the mole fraction of solute is 0.2 and the moles of solvent are 8, how many moles of solute are present?Class 11Chapter 01: SolutionsLevel 2Medium