Will someone tell me if i am right?
if a system is entirely isolated, which of the following conditions apply?
a. q = 0, w = 0
b. q > 0, w < 0
c. q > 0, w = 0
d. q = 0, w < 0
i thinks its b?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.