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Practice_Test_1_with_Solutions

Practice_Test_1_with_Solutions - Solutions to Practice Test...

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Solutions to Practice Test 1 1. Temperature of a substance is proportional to b. the average kinetic energy of its molecules 2. The length of the mercury column in a thermometer is 2.8 cm when immersed in ice water and 22.4 cm when immersed in boiling water. What is the length of the mercury column at 72 o C? 0 100 0 100 2.8 cm ( 2.8)100 72 100 22.4 2.8 19.6 1411.2 100 280 16.91 cm o t o t t t t L L t C L L L L C L L = × = × = = = a. 16.9 cm 3. In question 2, what temperature corresponds to a length of 12.8 cm? 0 100 0 100 12.8 2.8 cm ( 2.8)100 100 51 22.4 2.8 19.6 o t o t L L t C L L L C = × = × = = c. 51 o C 4. A constant volume gas thermometer has a pressure of 4.0 kPa when it reads a temperature of 373 K. What is the triple point pressure P 3 ? 3 3 3 273.16 273.16 373 4.0 kPa 273.16 4.0 kPa 2.93 kPa 373 T P P P P = = × = × = d. 2.9 kPa 5. If the triple point pressure is 4.5 kPa, what is the pressure corresponding to the boiling point of water? Boiling point of water is 373 K

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