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a. If a 6 cm diameter cylinder containing 2 g of an ideal gas at 25o...

a. If a 6 cm diameter cylinder containing 2 g of an ideal gas at 25o C is fitted with a 5 kg piston with a 20 kg weight on the piston, calculate the pressure and volume of the ideal gas if the atmospheric pressure is 1 atm. If the 20 kg weight is removed, provide detailed comments without further calculations on what would happen. You may assume a molecular weight of 28 for the gas.

b. Calculate the energy required to heat a gas from 30o C to 150o C if the gas flow rate and pressure at the heater outlet are 1.5 m3 /min and 125 kPa absolute respectively. Assume the specific enthalpy change is about 4,000 J/mol for the process.   

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Amanda K answered 2 years ago
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