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Mole Concept And Molar Mass

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

ChemistryA solution has molarity 2.5 M and density 1.25 g mL−1. The molar mass of solute is 100 g mol−1. What is the mass percent of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryIn an aqueous solution the mole fraction of water is 0.90. What is the approximate molality of the solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryIn a solution the mole fraction of solute is 0.25. If molar mass of solute is 60 and solvent is water what is the approximate mass percent of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistry200 mL of 3 M acid is mixed with 400 mL of 1.5 M same acid. Assuming final volume is 600 mL what is the molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryWhat is the approximate molality of a 68 percent by mass aqueous nitric acid solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 68 percent by mass nitric acid solution has density 1.42 g mL−1. What is its approximate molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 4 M sodium hydroxide solution has density 1.16 g mL−1. What is its approximate molality?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 3 molal glucose solution has density 1.15 g mL−1. What is its approximate molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryIn an aqueous solution the mole fraction of solute is 0.05. If the solvent is water what is the approximate molality of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryA solution has 8 percent mass percent of solute and total solution mass is 250 g. What is the mass of solvent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3MediumChemistryA solution has mole fraction of solute 0.6. What is the mole percent of solvent in the same binary solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3MediumChemistryIn which situation is mass-volume percentage directly most useful?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich option gives the most correct statement for mole fraction?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich option has all relations correct?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich concentration term is considered least affected by temperature change, if no substance is lost or removed?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryThe volume of a solution increases by 2 percent on heating while moles of solute remain same. What happens to molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryIf molality is to be kept the same and mass of solvent is tripled, what change is needed in moles of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryIf molarity is to be kept the same and the volume of solution is doubled, what change is needed in moles of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA solution contains 0.6 mole solute and has molarity 2 M. What is the volume in mL?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA solution contains 0.4 mole solute and has molarity 0.8 M. What is the volume of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2Easy