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Class 12 · Chemistry
→What masses of salt and water are required to prepare 300 g of a 10% salt solution by mass?
Class 12 · Chemistry
→A 500 g solution contains 5% sugar by mass. What is the mass of sugar?
Class 11 · Chemistry
→A solution contains 18 g urea dissolved in 200 g water. What is the approximate mass percentage of urea?
Class 11 · Chemistry
→If 25 g glucose is dissolved in 225 g water, what is the mass percentage of the solution?
Class 12 · Chemistry
→A solution has molality 3 mol kg⁻¹ and contains 500 g of water as solvent. How many moles of solute are present?
Class 12 · Chemistry
→A solution has molarity 0.5 mol L⁻¹. How many moles of solute are present in 200 mL of it?
Class 11 · Chemistry
→The mole fraction of solute in a solution is 0.3. What is the mole fraction of solvent if there are only two components?
Class 11 · Chemistry
→A solution has 15 percent solute by mass. What does this correctly mean?
Class 11 · Chemistry
→Which is the correct definition of molality?
Class 11 · Chemistry
→A solution contains 0.2 mol solute and 0.8 mol solvent. What is the mole fraction of solute?
Class 11 · Chemistry
→If cooling a solution decreases its volume while moles of solute remain constant, what happens to molarity?
Class 11 · Chemistry
→Which is the correct definition of molarity?
Class 11 · Chemistry
→What is the approximate mole fraction of urea in a 0.5 molal aqueous urea solution?
Class 11 · Chemistry
→What is the approximate mass percent of urea in a 0.5 molal aqueous urea solution?
Class 11 · Chemistry
→What is the approximate molality of a 98 percent by mass sulfuric acid solution?
Class 11 · Chemistry
→A 98 percent by mass sulfuric acid solution has density 1.84 g mL−1. What is its molarity?
Class 12 · Chemistry
→What is the approximate mole fraction of water in a 2 molal aqueous sucrose solution?
Class 11 · Chemistry
→A portion of 1 molal solution containing 1 kg solvent is mixed with a portion of 2 molal solution containing 0.5 kg solvent. What is the final molality?
Class 11 · Chemistry
→200 g of a 10 percent solution is mixed with 300 g of a 20 percent solution. What is the final mass percent?
Class 11 · Chemistry
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