Molecular Physics | Thermodynamics Answers

A gas contain in a flask of 500ml capacity was allowed to expand into another flask of volume 600ml connecting through a valve and at the same temperature,if the final pressure of the gas is 1.01×10^5pa,When the valve is open,what was the pressure of the gas in d 500mmgh?The volume of the flask is negligible

Superheated steam at 2 bar and 150oC is compressed isothermally. The steam in its final state is wet steam with a specific volume of 0.3511 m3 /kg.

Determine the change of enthalpy per kg of steam.

2 C₂H_6(g)      +      2 O_2(g) =  CO_2(g)    +      2 H₂O_(I)

1. How many grams of H₂O will be produced by 58.2 L of CH₄ at STP? Assume an excess of O₂.

Assuming compression is according to the law pV = constant. Calculate the initial volume of gas at a pressure of 2 bar which will occupy a volume of 6 cubic meters when it is compressed to a pressure of 42 bar.                                                                                                                        

A large mining company was provided with a 3 cu. meters of compressed air tank. Air pressure in the tank drops from 700 kPa to 180 kPa while the temperature remains unchanged at 28 ⁰C. What percentage has the mass of air in the tank been reduced.

Ammonia weighing 22 kgs is confined inside a cylinder equipped with a piston has an initial pressure of 413 kPa at 38°C. If 2900 kJ of heat is added to the ammonia until its final pressure and temperature are 413 kPa at 100°C, respectively, what is the amount of work done by the fluid in kJ?                                                                             

A certain gas at 101.325 kPa and 16°C whose volume is 2.83 m³ are compressed into a storage vessel of 0.31 m³ capacity. Before admission, the storage vessel contained the gas at a pressure and temperature of 137.8 kPa and 24°C; after admission the pressure has increased to 1171.8 kPa. What should be the final temperature of the gas in the vessel in Kelvin? 

The gaseous mixture has due point temperature of 15°C. The total pressure is 143.27 kPa. Determine the amount of water vapor present in 100-moles of the mixture. Note: Saturation pressure is at 15°C is 1.7051 kPa.

A volume of 400 cc of air is measured at a pressure of 740 mm Hg abs and a temperature of 18°C. what will be the volume at 760 mm Hg abs and 0°C?  

If 8 kg of air at 27°C are heated at constant pressure until the absolute temperature doubles, calculate the heat required in kJ.