Arigid tank whose volume is 2 m3, initially containing air at 1 bar, 295 k, is connected by a valve to a large vessel holding air at 6 bar, 295 k. the valve is opened only as long as required to fill the tank with air to a pressure of 6 bar and a temperature of 350 k. assuming the ideal gas model for the air, determine the heat transfer between the tank contents and the surroundings, in kj

Explanation:

First we calculate the mass of the aire inside the rigid tank in the initial and end moments.

(i could be 1 for initial and 2 for the end)

State1

State2

So, the total mass of the aire entered is

At this point we need to obtain the properties through the tables, so

For Specific Internal energy,

For Specific enthalpy

For the second state the Specific internal Energy (6bar, 350K)

At the end we make a Energy balance, so

No work done there is here, so clearing the equation for Q

The sign indicates that the tank transferred heat to the surroundings.

sorry what a asnns

explanation: