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Lakeland Solutions Review

Lakeland Solutions Review. Click on a question to begin. Question 1. Try Again. Review the definition of Molarity. Try Again. Correct!. Molarity is the moles of solute per liter of solution. Next Question. Question 2. Try Again.

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Lakeland Solutions Review

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  1. Lakeland Solutions Review

  2. Click on a question to begin

  3. Question 1

  4. Try Again • Review the definition of Molarity Try Again

  5. Correct! • Molarity is the moles of solute per liter of solution Next Question

  6. Question 2

  7. Try Again • Think about the best conditions to keep carbonation in pop Try Again

  8. Correct! • The best conditions are high pressure and low temperature. These produce a situation where the gas will be forced into the liquid Next Question

  9. Question 3

  10. Try Again • Molarity is moles of solute per liter of solution Try Again

  11. Correct! • There are 4 moles of solute in 2 liters of solution. Molarity is moles divided by liters so 4/2 = 2 M Next Question

  12. Question 4

  13. Try Again • Review your solutions vocabulary Try Again

  14. Correct! • An electrolyte is a solution that can conduct electricity Next Question

  15. Question 5

  16. Try Again • The addition of a solute changes the vapor pressure of a solution. The more solute dissolved, the greater the change in colligative properties. Try Again

  17. Correct! • The 3.0 M solution has more solute dissolved than the 2.0 M solution. This means that there will be a greater boiling point elevation and freezing point depression Next Question

  18. Question 6

  19. Try Again • Review the definition of molarity Try Again

  20. Correct! • 3.0 M means that there are 3.0 moles per liter of solution Next Question

  21. Question 7

  22. Try Again • Use the molarity equation to solve for number of moles and then convert to grams Try Again

  23. Correct! • Molarity = moles/liters so 1.00 M = x/0.50 L. X = 0.500 mol. Convert 0.500 mol to grams of HI (mass = 128 g) to get 64 grams. Next Question

  24. Question 8

  25. Try Again • The lowest freezing point will have the lowest vapor pressure. The more ions present, the lower the vapor pressure. Try Again

  26. Correct! • The beaker contains the most ions which will reduce vapor pressure the most. Next Question

  27. Question 9

  28. Try Again • Remember that Molarity is moles per liter Try Again

  29. Correct! • 0.50 mol/0.50 liters is 1.00 M Next Question

  30. Question 10

  31. Try Again • Molarity equals moles of solute divided by liters of solution. Try Again

  32. Correct! • 3.0 M = x/2.0 L so x = (3.0)(2.0) = 6.0 mole Next Question

  33. Question 11

  34. Try Again • The exponents in the expression tell you how many of each ion are present in the compound Try Again

  35. Correct! • The exponents in the expression mean that there are 2 A and 3 B in the solid. Next Question

  36. Question 12

  37. Try Again • Think about what is the best way to keep carbonation in pop. Try Again

  38. Correct! • Increasing pressure increases the solubility of a gas in a liquid Next Question

  39. Question 13

  40. Try Again • Convert the grams of sugar to moles and divide by the liters in order to determine molarity Try Again

  41. Correct! • 180 grams of C6H12O6 is equal to 1 mole. 1 mole divided by 0.5 L (500 mL) is 2.0 M. Next Question

  42. Question 14

  43. Try Again • The addition of a solute causes a change in vapor pressure resulting in boiling point elevation and freezing point depression Try Again

  44. Correct! • The addition of a solute causes the boiling point to go up and the freezing point to go down. Next Question

  45. Question 15

  46. Try Again • %v/v = volume of solute x 100 volume of solution Try Again

  47. Correct! • 70 = x x 100 x = 413.7 mL 591 Next Question

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