The density of helium is 0.178 kg/m3 at STP. What is the density in kg/m3 at 25°C and 98 kPa? A steel tank initially contains oxygen gas at 450 kPag and 20°C. After 2.5 kg of oxygen had been used, the pressure and temperature of the gas in the tank was found to be 180 kPag and 20°C, respectively. What was the initial mass of oxygen in the tank in kg? A 1500-L tank contains nitrogen at a pressure of 400 kPag and a temperature of 320K. Later, because of a leak, it was found that the gage pressure has dropped to 320 kPag and the temperature has decreased to 300K, determine the amount of nitrogen that has leaked out in kg.

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A: Given: P2=1200 kPaT2=700 °C=973 KT3=1200 °C= 1573 K Solution: (a) As the process 1-2 is constant…

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A: GivenQ=280ltr=0.280 m3P1=63.5 cm HgCp=0.847 kJ/kgKCv=0.659 kJ/kgKP2=5 atmV2=? adiabatic process

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Q: The tank contains 2kg of water at 20C, 1 atm. The tank is heated. When the tank pressure reaches…

A: Write the given data. m1=2 kgT1=20 °CP1=1 atmP2=300 kPa

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Q: Two kilogram of gas is confined in a 1m³ tank at 200 kpa and 88°C. What type of gas is in the tank?

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.