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Class 11 · Chemistry
→A 1 M sodium chloride solution has density 1.05 g mL−1. What is the approximate mass percent of sodium chloride?
Class 12 · Chemistry
→What is the approximate mass of solute in 2 L of an aqueous solution having concentration 50 ppm?
Class 11 · Chemistry
→A 1 kg solution contains 0.002 g solute. What is the concentration in ppm?
Class 11 · Chemistry
→What is the approximate mole fraction of acid in a 36.5% by mass hydrochloric acid solution?
Class 11 · Chemistry
→What is the approximate molality of a 36.5 percent by mass hydrochloric acid solution?
Class 12 · Chemistry
→A 36.5% by mass hydrochloric acid solution has density 1.18 g mL−1. What is its molarity?
Class 11 · Chemistry
→Which group contains only concentration units that are not directly affected by temperature change?
Class 11 · Chemistry
→The mole fraction of solute in water is 0.1. What is the approximate molality of the solution?
Class 11 · Chemistry
→What is the mole fraction of benzene in a mixture of 39 g benzene and 46 g toluene?
Class 11 · Chemistry
→25 mL ethanol is mixed and final volume is made 200 mL. What is the volume percent of ethanol?
Class 11 · Chemistry
→5 g solute is dissolved and the final volume of solution is made 250 mL. What is the mass by volume percent?
Class 11 · Chemistry
→What mass of sodium carbonate is present in 250 mL of 0.5 M sodium carbonate solution?
Class 12 · Chemistry
→A 5 molal glucose solution has density 1.2 g mL−1. What is its approximate molarity?
Class 12 · Chemistry
→What is the approximate mass percent of solute in a 2 molal aqueous sodium hydroxide solution?
Class 11 · Chemistry
→If the final volume is measured directly while preparing a solution, which volume should be used for calculating molarity?
Class 11 · Chemistry
→A solution has mole fraction of solute 0.2 and the solvent is water. What is the approximate molality of the solution?
Class 11 · Chemistry
→12 mg impurity is present in 3 L water. Assuming a very dilute solution, what is the concentration in ppm?
Class 11 · Chemistry
→When is density required to convert between mass percent and molarity?
Class 12 · Chemistry
→What is the approximate mole fraction of solute in a 1 molal aqueous solution where the solvent is water?
Class 12 · Chemistry
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