Chem 2 Test 1 2011 - 1 We add 1000 J of heat to a 25.0-g...

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Unformatted text preview: 1. We add 1000 J of heat to a 25.0-g sample of liquid carbon tetrachloride (CCl 4 ) at 55.0°C. What mass of CCl 4 will vaporize at its boiling point of 76.7°C? For liquid CCl 4 , specific heat capacity = 0.862 J/g.K and ΔHvap = 194 J/g. Student Response Value Correct Answer A. 25.0 g B. 22.3 g C. 5.15 g D. 4.44 g E. 2.74 g 100% Score: 1/1 2. The rate law for the reaction 2A => B is rate = k[A] with a rate constant of 9.76 min-1 . What is the half-life of the reaction in min? Score: 1/1 3. Which of the following statements is FALSE? Score: 1/1 4. The critical temperature of krypton is –64°C. What pressure is required to form liquid krypton at room temperature, about 25°C? Score: 0/1 5. For the reaction; A → B, the rate law is rate = k[A]. If the reaction is 40.0% complete after 50.0 minutes, what is the value of the rate constant, k? Score: 0/1 6....
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This note was uploaded on 03/06/2011 for the course CHEM 1332 taught by Professor Shiv during the Spring '08 term at University of Houston.

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Chem 2 Test 1 2011 - 1 We add 1000 J of heat to a 25.0-g...

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