Practice Q1: If a system(below) follows Path 1 the white arrow) to change from the initial state to the final state the system absorbed 3000 J of heat, and the work done by the system to the surroundings was 2500 J (a How much the internal energy(U)was changed? (b) If the system follows Path 2( the yellow arrow )to change, how much the internal energy was changed? 「roar)≤o;a、r、;k01、T1 latm), U1 atm H2O(L,100°C,1atm)→)H2O(g,100C,1atm)Practice  Q1: If a system (below) follows Path 1 (the white arrow) to change from the initial state to the final state, the system absorbed 3000 J of heat, and the work done by the system to the surroundings was 2500 J. (a) How much the internal energy (U) was changed? (b) If the system follows Path 2 (the yellow arrow) to change, how much the internal energy was changed? 10 H2O ( l, 25 ºC, 1atm ), U1  H2O ( g, 25 ºC, 1atm ), U2   H2O ( l, 100 ºC , 1atm )  H2O ( g, 100 ºC, 1atm )