Question

(1) Steady state is when a. All process variables Temperature (T),Pressure(P), volumetric flowrate and mass do not change with time (minor fluctuations) b. Temperature only changes with time c. Only volumetric flowrate and mass do not change with time d. Only Temperature (T), Pressure (P) do not change with time. (2)Temperature: a. b. e. d. An interval of1 Celsius degree or Kelvin therefore contains 8.1 Fahrenbeit or Rankine degrees An interval of 1 Celsius degree or Kelvin therefore contains 459.67 Fahrenheit or Rankine degrees An interval of 1 Celsius degree or Kelvin therefore contains 1.8 Fahrenheit or Rankine degrees An interval of 1 Celsius degree or Kelvin therefore 32 Fahrenheit or Rankine degrees (3) Hydrostatic Pressure (P) at the base of a tank/oolumn is defined by the following a. The force on the top surface plus the weight of the fluid in the ooluma, thus P-P b. The force on the top surface plus gauge pressure, thus P-Po P e. The force on the top surface plus absolute pressure, thus P-Pot P d. The force on the top surface plus atmospheric pressure, thus Po P pgh (4) The specific gravity of a substance is: a. Not dimensionless The ratio of the density of the substance to the density of a reference substance at a specific condition, most commonly for solids and liquids the density reference is water at 4.0°c The ratio of the density of a reference substance to the density of the substance at a specific condition, most commonly for solids and liquids the density reference is water at 4.0°C. The ratio of the density of the substance to the density of a reference substance at a specific condition, most commonly for solids and liquids the density reference is water at 25°C b. c. d. (5) Choose one which is false Density and mass concentration can have the same units, but represent differeat concepts The units ppm or ppm express concentrations of race species in mixtures. The density of a mixture is equal to the average of the sum of the individual components which make up that mixture. The molarity of a solution is can be expressed as gram-noles solute litre of solution. a. b. e. d?

Answer 1

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