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Class 12 · Chemistry
→In what volume ratio should 0.5 mol L−1 and 1.5 mol L−1 solutions of the same solute be mixed to obtain 1.0 mol L−1 solution?
Class 12 · Chemistry
→From 1 L of 0.2 mol L−1 solution, 100 mL is removed and replaced by the same volume of water. What is the new molarity?
Class 11 · Chemistry
→A solution has 25 mass percent solute. Molar mass of solute is 50 g mol−1 and that of solvent is 18 g mol−1. What is the approximate mole fraction of solute?
Class 11 · Chemistry
→A solution has solute mole fraction 0.25. If molar masses of solute and solvent are 60 g mol−1 and 18 g mol−1 respectively, what is the approximate mass percentage of solute?
Class 12 · Chemistry
→In 250 mL of 0.05 mol L−1 solution, mass of solute is 1.25 g. What is the molar mass of the solute?
Class 12 · Chemistry
→What is the molarity of a 2 percent mass by volume solution if molar mass of solute is 40 g mol−1?
Class 12 · Chemistry
→How many moles of sodium chloride are present in 250 mL of 12 percent mass by volume sodium chloride solution? Molar mass is 58.5 g mol−1.
Class 12 · Chemistry
→100 mL of 0.5 mol L−1 solution is diluted to 500 mL. How many moles of solute are present in 50 mL of the final solution?
Class 12 · Chemistry
→The mass fraction of solute in a solution is 0.12. What is the mass percentage of the same solute?
Class 12 · Chemistry
→A solution contains 5 g solute and 95 g solvent. What are the mass percent and mass fraction of solute respectively?
Class 12 · Chemistry
→A 0.5 molal solution contains 0.25 mol solute. What is the mass of solvent in grams?
Class 12 · Chemistry
→20 mL is taken out from 100 mL of 0.5 mol L−1 solution and diluted again to 100 mL with water. What is the new molarity?
Class 12 · Chemistry
→200 mL of 0.1 mol L−1 solution and 300 mL of 0.3 mol L−1 solution of the same solute are mixed. What is the final molarity?
Class 12 · Chemistry
→An aqueous solution contains 0.036 g glucose in 1 L solution. What is the approximate glucose concentration in ppm?
Class 12 · Chemistry
→How many moles of total ionic particles are present in 400 mL of 0.25 mol L−1 calcium chloride solution, assuming complete ionisation?
Class 12 · Chemistry
→What is the approximate molality of a 40 percent by mass methanol solution? Molar mass of methanol is 32 g mol−1.
Class 11 · Chemistry
→A solution contains 58.5 g sodium chloride and 180 g water. What is the approximate mole fraction of sodium chloride?
Class 12 · Chemistry
→What is the approximate mole ratio of ethanol to water in a 40 percent by mass ethanol solution? Molar mass of ethanol is 46 g mol−1.
Class 11 · Chemistry
→20 g solute is dissolved in 180 g water. What are the mass percentages of solute and solvent respectively?
Class 11 · Chemistry
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