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Do Now – March 4

Do Now – March 4. The solubility of oxygen gas at sea level, 1 atm., is 2.3 . How many grams will dissolve in 1 L of ocean water at 100 meters below sea level where the pressure is 3.2 atm.?. Do Now – March 5.

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Do Now – March 4

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  1. Do Now – March 4 • The solubility of oxygen gas at sea level, 1 atm., is 2.3 . How many grams will dissolve in 1 L of ocean water at 100 meters below sea level where the pressure is 3.2 atm.?

  2. Do Now – March 5 An insecticide comes in concentrated bottles that must be diluted. The concentrated bottle has a molarity of .55M. How many mL of the concentrated bottle is needed to make 3.7 L (gallon) of a .0050M solution?

  3. Do Now – March 6 What is the molarity of a saturated solution of KClO3 at 60◦C? Assume the 100 g of water is equivalent to 100 mL of solution.

  4. Do Now – March 7 The reaction below takes place in 500. mL of water. 45 grams of sodium reacts with an excess of chlorine gas. What is the molarity of the sodium chloride solution at the end of the reaction? 2Na (s) + Cl2(g)  2NaCl (aq)

  5. Do Now – March 10 A beer label states that it contains 7.5% alcohol by volume. How many ml of ethanol, C2H5OH are present if the volume of the beer is 900 mL? How many mL of water?

  6. Do Now – March 13 A solution contains 75 grams of water and 5.0 grams of dissolved CaCl2. Calculate the molality of the solution.

  7. Do Now – March 14 25 grams of Calcium Chloride is added to 75 grams of water. What is the freezing point of the water?

  8. Do Now – March 17 A little leprechaun adds 50 grams of an ionic solid, that contains 3 ions, to 125 grams of water. The new freezing point of the water is -1.5◦C. What is the molecular mass of the ionic compound that the leprechaun added?

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