Question 4 (A) Consider these scenarios and state whether work is done by the system on the environment or by the environment on the system: (2 points) (1) (II) (III) Opening a carbonated beverage Filling a flat tire A sealed empty gas can expands on a hot day, bowing out the walls. (B) A 48 kg of Steel casting (Cp = 0.5 kJ kg’ K ‘) at a temperature of 450°C is quenched in 125 kg of oil (Cp = 2.5 kJ kg-1 K-1) at 25°C. If there are no heat losses, what is the change in entropy of: (1) the casting, (1 point) (II) The oil, (1 point) (III) Both considered together? (1 point)