Molecular Physics | Thermodynamics Answers

  A  cylindrical gas tank 1 m long, inside diameter of 20 cm, is evacuated and then filled with carbon dioxide gas at 25°C. To what pressure should it be charged if there should be 1.2 kg of carbon dioxide?

A vessel having a volume of 5 m3 contains 0.05 m3 of saturated liquid water and 4.95 m3 of saturated water vapour at 0.1 MPa. Heat is transferred until the vessel is filled with saturated vapor.

Determine the heat transfer for this process

In a centrifugal compressor suction and delivery pressure are 100 kpa and 550 kpa respectively .The compressor draws 15m3/kg .Find increase in internal energy per kg of air

A 2-kg mass of oxygen expands at a constant pressure of 172 kPa in a piston-cylinder system from a temperature of 32 C to a final temperature of 18 C. Determine (a) the heat required; (b) the work; (c) the change of enthalpy; (d) the change of internal energy.

Carbon dioxide flows steadily at 1 kg/s through a device where the pressure, specific volume, and velocity of the gas are tripled according pVn = C. The inlet conditions are p1 = 200 kPa, v1 = 0.4 m3/kg, and v1 = 100 m/s. Determine (a) n; (b) the initial and final temperatures; (c) the change of enthalpy; (d) the power; (e) the heat.

Two thermometers in degrees Celsius and degrees Fahrenheit are both immersed in a fluid. If the reading in degrees Fahrenheit is thrice that of the degrees Celsius reading, what is the equivalent reading in degrees Rankine?

John decides to lose weight by eating only cold food. A 200 grams mango

pudding yields about 375 kcal of energy when eaten. If its specific heat is 0.5

kcal / kg. ℃, how much greater is its energy content at 60 ℃ than 30 ℃ ?

A centrifugal pump operating under steady flow conditions delivers 2, 270 kgm/min of water

from an initial pressure of 82, 740 Pa to a final pressure of 275, 800 Pa. The diameter of the inlet

pipe to the pump is 15.24 cm and the diameter of the discharge pipe is 10.16 cm. Determine the

work. Is it done on or done by the system?

Gold has a face centered cubic unit cell and has the density 𝟏𝟗. 𝟑 𝒈 𝒄𝒎−𝟑. Calculate the

length along an edge. (𝐴𝑢 = 197 𝑔 𝑚𝑜𝑙−1)

a centrifugal pump operating under steady flow conditions delivers, 3,050 kg/min of water from initial pressure of 83, 400 Pa to final pressure of 300,000 Pa. the diameter of the inlet pipe to the pump is 16cm and the diameter of discharge pipe is 10.16cm. what is the work