Chapter 5, Problem 5.73P

Calculate the heat capacity of a gas sample from the following information: The sam- ple comes to equilibrium in a flask at 25°C and 121.3 kPa. A stopcock is opened briefly, allowing the pressure to drop to 101.3 kPa. With the stopcock closed, the flask warms, returning to 25°C, and the pressure is measured as 104.0 kPa. Determine Cp in J mol- K- assuming the gas to be ideal and the expansion of the gas remaining in the flask to be reversible and adiabatic.

Find the total heat in kJ required for ice at -15°C to become vapor at 120°C.

An object follows Newton's law of Heating/Cooling. If the object cools from 101°C to 81°C after 31minutes. Note: the ambient temperature is 24°C. How much more time(minutes) needs to pass to reach 44°C.   Show your solution in step by step process.

Please take Appropriate Values at the given conditions,Don't Copy.

At the beginning, there is air in the insulated piston cylinder device with a volume of 20L at 25 degrees Celsius 250 kPa Conditions Then, by operating the heater with 220 V and 10A value for 2 minutes, the temperature of the air increases. Using the average specific heat assumption, find the temperature and the boundary work (kJ) in the final case. Air will be considered the ideal gas.

A piston-cylinder with 25 grams of saturated water within. Is kept at a pressure of 300 kpa. A heater inside supplies We,in =7.2kJ while the cylinder loses 3.7 kJ of heat. Show that the boundary Wb and the change in internal energy ∆U in this problem can be combined to form ∆H anf find the final temperatire in Celsius.

8. How much steam at 120 °C is needed to change 1 kg of ice at -10 °C to water at 10°C?

ANSWER ALL THREE AND GET A LIKE <3 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.

If an ideal gas undergoes an isothermal process with no changes in kinetic and potential energy as a closed system, (choose the right statement below) this process is adiabatic work in the process is equal to zero the total energy change in this process is equal to zero