Which of the following is NOT part of the hazard warning lamp circuit?
A) Flasher unit B) Instrument panel C) Head lamps D) Turn signal lamps
C
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This problem concerns a compound for which the following data is available:
Critical Temperature = 1200 K Critical Pressure = 30 bar Enthalpy of Vaporization at atmospheric pressure = 5000 J/mol. Boiling point at one bar of pressure = 500 K Acentric factor = 0.6 Equation of state for gas/vaporphase: Z = 1 + bP2/T where b = 1 K/bar2 Approximate molar volume of liquid = 200 cm3/mol A) Use the Claussius-Clapeyron Equation to estimate the vapor pressure at T=550 K. B) Use the shortcut equation to estimate the vapor pressure at T=550 K. C) Indicate which of the two estimates generated in questions A and B is more reliable, and EXPLAIN WHY. D) Find a general expression for the fugacity for this compound in the vapor/gas phase, as a function of temperature and pressure. For full credit, the equation should be an algebraic equation (not a differential equation) and should contain only P, T, f and constants. E) Give your best estimates of the liquid phase fugacity and the vapor phase fugacity for this compound, each at T=550 K and P=20 bar.
For effective use in professional communications, each instant message or text message should cover only _____ topic(s)
a. one b. two c. three d. four
The United States is fortunate compared to China because:
A. it has a relative excess of cropland compared to population. B. China's population has stabilized and the country is no longer growing. C. the U.S. is more dependent on grain-fed animals. D. it has plentiful rainfall.
Technology plays an important role in theft prevention and driver security.
Answer the following statement true (T) or false (F)