Which of the refrigerant ratings indicates that a refrigerant is considered highly flammable?

A) B1 B) A3 C) A1 D) B2


B

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What type of engine oil pump is most commonly used on truck diesel engines?

A. plunger B. vane C. external gear D. centrifugal

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The vapor pressure of benzene at T=25 °C is 0.125 bar. The Appendix of your book contains enough additional data on benzene to estimate other vapor pressures by the Antoine, shortcut, or Clausius-Clapeyron approaches.

The molar volume of liquid benzene at room temperature and pressure (T=25 °C, P=1 bar) is V = 88.9 cm3/mol. Liquid benzene also has a coefficient of thermal expansion of ? =1.237 x 10-3 K-1and isothermal compressibility of ? = 8.9 x 10-5bar-1 A) Give your best estimate of the vapor pressure of benzene at T=50 °C, and explain why you chose the method that you chose. B) Give your best estimate of the vapor pressure of benzene at T=100 °C, and explain why you chose the method that you chose. C) Give your best estimate of the fugacity of liquid benzene at T=25 °C and P=20 bar, and state any assumptions that you make. D) (10 points) Benzene expands as it’s heated. Estimate the molar volume of liquid benzene at a temperature of 50 °C and a pressure of P=1 bar.

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An automobile can be divided into four major systems: the engine, the drivetrain, the chassis and the body, interior and accessories.

Answer the following statement true (T) or false (F)

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The Code® requires the water heater rating of not less than ____________________% of the nameplate.

Fill in the blank(s) with the appropriate word(s).

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