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Water C 1 Flashcards pp. 45-53

Water C 1 Flashcards pp. 45-53. Use the graph on pg. 46 to answer some of these questions. Give an example of a solute and a solvent. Solvent: water Solute: kool-aid (or sugar) OR Solvent: laundry detergent Solute: grease stain.

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Water C 1 Flashcards pp. 45-53

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  1. Water C 1 Flashcardspp. 45-53

  2. Use the graph on pg. 46 to answer some of these questions.

  3. Give an example of a solute and a solvent.

  4. Solvent: waterSolute: kool-aid (or sugar)ORSolvent: laundry detergentSolute: grease stain

  5. If you have 60g KNO3 at 40oC in 100g of water, is the solution…saturated, unsaturated or supersaturated?

  6. Saturated

  7. If you have 80g of KNO3 at 10oC, 100g of water, is the solution…saturated, unsaturated or supersaturated?

  8. Supersaturated

  9. If you have 70g of KNO3 at 80oC, in 100g of water, is the solution…saturated, unsaturated or supersaturated?

  10. Unsaturated

  11. What is the minimum amount of water needed to dissolve 70g KNO3 at 80oC?

  12. At 80oC160g KNO3 = 70g KNO3100g H2O Xgx = 43.8g

  13. What mass of KNO3 will dissolve in 100g of water at 10oC?

  14. About 20 g KNO3

  15. How much KNO3 will dissolve in 250g of H2O at 50oC?

  16. At 50oC80g = X 100g 250gx = 200g KNO3

  17. If you have 50g KNO3 at 50oC, in 100g H2O how much more KNO3 must be added to saturate the solution?

  18. 80g is saturated so subtract 50g and 30g more of KNO3 must be added.

  19. An alka-seltzer tablet is placed in water and then the medicine is consumed.Identify the 3 underlined substances as solute, solution and solvent.

  20. Solute - Alka-seltzer tabletSolvent - waterSolution - medicine

  21. What is the percent concentration of a solution that contains 45g of weed killer in 1500g of water?

  22. 45 x 100(45g + 1500g) =2.9%

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