Hello, can you please help me solve these problems. I don't understand what to do$...$

Exercise $3$

Consider two tanks, A and B$,$ each with a volume of $200$ L$,$ connected by a valve. Initially, tank A contains R$-410$A at $25\backslash$deg C$,$ with $20$ L occupied by the liquid phase and the rest of the volume occupied by the vapor. Tank B is empty.

a$)$ Fill in this table to define the initial state of R$-410$A in tank A$.$ Detail

your approach

b$)$ The valve is then opened, allowing a certain amount of saturated vapor to

flow from A to B until the pressure in tank B reaches that of tank A$,$ at which point the valve is closed again. This process occurs slowly in order to maintain a constant temperature of $25\backslash$deg C throughout the process. Fill in this table to define the final state of R$-410$A in tank B$.$ Detail your approach

c$)$ Fill in this table to define the final state of R$-410$A in tank A$.$ Detail

your approach