Question

A 5-kg block of iron is placed against a 2-kg block of aluminum. If 2,341 J of heat flows out of the iron, how much heat flows into the aluminum?

Answer 1

Q = 2,341 J (if system is well insulated), 0 J < Q < 2,341 J (if system is not insulated).

Step-by-step explanation:

This question depends on the fact that system is isolated or not. If the system is well insulated, then, the heat flow is equal to 2,341 J. But if the system is not isolated, a portion of such 2,341 J is transfered to surroundings. Given that air has a low thermal conductivity, heat is transfered mostly to the aluminium block. Then, Q < 2,341 J