quiz1dvb - msf365 Quiz 1 VANDEN BOUT (53585) This print-out...

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msf365 – Quiz 1 – VANDEN BOUT – (53585) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – Fnd all choices before answering. 001 10.0 points Blood, sweat, and tears are about 0.15 M in sodium chloride. Estimate the osmotic pressure of these solutions at 37 C. The gas constant is 0.0821 L · atm · mol 1 · K 1 . 1. 0.91 atm 2. 3.8 atm 3. 7.6 atm correct 4. 11 atm 5. 1.8 atm Explanation: 002 10.0 points The formation of tiny bubbles when a beaker of water is mildly heated indicates that 1. water is being extensively hydrogen bonded. 2. air is less soluble in water at higher tem- peratures. correct 3. the liquid is at its boiling point. 4. water is being decomposed into hydrogen and oxygen. 5. the lattice energy of water is large. Explanation: The bubbles are tiny pockets of air that were dissolved in the water at the lower tem- perature. As the gas molecules acquired more energy they were able to escape from the sol- vent. 003
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quiz1dvb - msf365 Quiz 1 VANDEN BOUT (53585) This print-out...

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