Please help me I’ll give a lot of points

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island