What is the final gas pressure?
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- Consider a perfect gas that undergoes 1) isobaric heating or 2) isochoric heating,in each case arriving at the same final temperature. Comparing the two cases,are the final values of e and h the same or different? Explain your conclusions.Determine properties of saturated vapor if its temperature is 228 °C.For final answers: h and u (correct to 2 decimal places), s and v (correct to four decimal places).consider two cases of vaporization of a saturated liquid to saturated vapor at constant pressures of 102.7 kPa and 506.8 kPa. which case requires more energy? Show all necessary calculations to arrive at the correct final answer.
- Determine the internal energy change for carbon monoxide, in kJ/kg, as it is heated from 312° K to 1456° K, using the ideal gas properties tableThe piston in a car engine compresses a mixture of gasoline vapour and air from 700ml to 100ml during its compression stroke. Before the compression stroke, the mixture had a pressure of 75 kPa and a temperature of 120celcius. What is the pressure of the cylinder after the compression stroke if the temperature of the gas rises to 200celcius? Express your answer in MPa with two significant digits.What is the specific enthalpy of the water at 9.0 bar and temperature of 100 C? Express your answer in kJ/kg.
- Determine the specific volume, in m3/kg, of R-134a at a pressure of 100 kPa and temperature of 10°C.What is the specific volume of oxygen at 25 psia and 80°F?Determine the change in enthalpy of Hydrogen gas between 27° C and 407° C in kJ/kg using properties at the average temperature. Assume that specific heats are constant and evaluated at the average temperature. Provide your answer to one decimal point using rounding.
- Water is boiled at sea level in a coffeemaker equipped with an immersion-type electric heating element. The coffeemaker contains 1 L of water when full. Once boiling starts, it is observed that half of the water in the coffeemaker evaporates in 13 min. Determine the power rating of the electric heating element immersed in water. Also, determine how long it will take for this heater to raise the temperature of 1 L of cold water from 18°C to the boiling temperature.An ideal gas at 43 psig and 82°F is heated in a rigid tank to 120°F. Determine the final pressure in psia.A mass of gas has a pressure of 1.2 MPa, volume of 0.03 m3 and temperature of 100°C.The pressure is changed to 400 kPa and the volume is changed to 0.06 m3. Determine the new temperature.