Select the true statement Work done by the system has a positive value of w. When the system releases heat, q has a positive value A positive AU value is possible if w is positive and q is positive A positive AU value is possible if w and q are both negative A negative AU value is possible if w and q are both positive

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If 15.2 L of gas expands to 45.8 L, against a constant pressure of 0.838 atm what is the value of w (work)? (Give the answer in L atm and Joules)

A chemical reaction is run in which 308 Joules of work is done on the system and the internal energy changes by + 84 Joules.Calculate q for the system.q =________  Joules

A cylinder and piston system releases 328 J of heat and does 144 J of work pushing the piston against external pressure. State the value of q for this process with the correct sign. J State the value of w for this process with the correct sign. J State the value of the change in internal energy, AE, for this process with the correct sign. J

The question is given like this, it is not incomplete. There is no heat capacity of the calorimeter given. Can it be solved without that? It is high school chemistry so maybe it can be solved in an easier way? Many thanks.

Calculate the change internal energy (AE or AU) for a system that is gaining 65.0 kJ of heat and has 855 J of work performed on it by the surroundings. Be mindful of units and signs. 65.9 kJ O -64.1 kJ O -65.9 kJ -65.0 kJ O 64.1 kJ

A cup of water (the system) is heated in a microwave oven until it begins to visibly boil.  State whether each of q, w, and ΔU is positive, negative, or zero.