0.78 is what the verified answer says
c well actually I remember being tought this but I cant remember it 100
I believe it’s a. hope this helps
When removing oil from a low pressure system, the temperature should be 130°F because, less refrigerant will be contained in the oil at higher temperature. Liquid charge into a deep vacuum will boil and may lower temperatures enough to freeze water in the tubes.
For this you will need the latent heat capacity for the vaporization of water.