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Class 11 · Chemistry
→A 200 g solution contains 25 percent solute by mass. What is the mass of solute?
Class 11 · Chemistry
→A 10% by mass urea solution is made in water. What is the approximate mole fraction of water?
Class 12 · Chemistry
→What mass of potassium chloride is required to prepare 500 mL of 0.1 M potassium chloride solution?
Class 12 · Chemistry
→250 mL of a 0.4 M solution is diluted to a total volume of 1 L. What is the final molarity?
Class 11 · Chemistry
→10 g sodium chloride is dissolved in 90 g water. What is the mass percent of sodium chloride?
Class 11 · Chemistry
→5 mg of fluoride ions are present in 2 kg of water. What is the concentration in parts per million?
Class 12 · Chemistry
→50 mL of a 2 M solution is diluted to a final volume of 500 mL. What is the new molarity?
Class 11 · Chemistry
→100 mL of 1 M hydrochloric acid is mixed with 200 mL of 0.5 M same acid. If final volume is 300 mL what is the molarity?
Class 11 · Chemistry
→Which concentration unit generally does not change with temperature because volume is not involved?
Class 11 · Chemistry
→A 20% by mass glucose solution is prepared in water. What is its approximate molality?
Class 12 · Chemistry
→What is the mole fraction of ethanol in a solution made from 46 g ethanol and 90 g water?
Class 12 · Chemistry
→A 10% by mass sodium hydroxide solution has density 1.11 g mL−1. What is its approximate molarity?
Class 12 · Chemistry
→6 g of urea is dissolved in water and the final volume is made 500 mL. What is the molarity of the solution?
Class 11 · Chemistry
→18 g of glucose is dissolved in 200 g of water. What will be the molality of the solution?
Class 11 · Chemistry
→If a question gives grams of solute and millilitres of solution, which concentration term is most direct?
Class 11 · Chemistry
→Which option correctly describes the effect of dilution on molarity?
Class 11 · Chemistry
→Which option gives the correct statement about mole fraction?
Class 11 · Chemistry
→A solution contains 2 moles solute and 8 moles solvent. What is the mole percent of solute?
Class 11 · Chemistry
→8 g solute is used to prepare 400 mL solution. What is the mass-volume percentage?
Class 12 · Chemistry
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