Be sure to answer all parts. The Henry's law constant (kH) for O2 in water at 20°C is 1.28 x 10 mol/(L atm). (a) How many grams of O2 will dissolve in 4.50 L of H,0 that is in contact with pure O2 at 1.00 atm? gO2 (b) How many grams of O2 will dissolve in 4.50 L of H,0 that is in contact with air where the partial pressure of O2 is 0.209 atm?

5 L山 When 1.06 g of a certain molecular compound X are dissolved in 85.0 g of dibenzyl ether ((C,H,CH,),0), the freezing point of the solution is measured to be 0.9°C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 1 significant digit. 自 OL Check Save For Later Submit Assignment O2022 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility EPIC 中Xe MacBook Pro F2 F3 F4 F7 F8 F10 6-5 #3 3. 2 $ 一 8 dele R. A C. W alt alt option 10 command option 1Q15

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4. What is the freezing point depression when 62.2 g of toluene (C,H) is dissolved in naphthalene? The freezing point constant for naphthalene is 7.00 °C/m 481 g of

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Calculate the percent by mass of solute (%w/w) in solution when 2.14 g of potassium chloride is dissolved in 25.0 g of water.

Assuming that the volumes are additive, what volume of water must be added to 35mL of 15%  KOH to make a solution which is 10%?