Best answer
Positive
People also ask
When heat flows out of a system its value is negative?
When what flows into a system it’s value is positive when heat flows out of the system it’s value is negative? heat. apex. What does a negative value for heat represent? The Short Answer = Cooling. What is a endopthermic reaction? An endothermic reaction is a reaction where heat flows from the surroundings in to the system.
What is the difference between heat flow and work flow?
Heat flow is considered positive when heat flows (into, out of) a system; work is considered positive when work is done (by, on) a system. 1. out of; by 2. into; on 3. out of; on 4. into; by Heat flow q is considered positive when heat flows into a system. Work w is considered positive when work is done on a system.
How does heat flow through a system?
Heat flows into or out of a system in response to a temperature difference, always flowing from hotter temperature regions (cooling them) to cooler ones (warming them).
What is the quantity of heat for a process represented by?
The quantity of heat for a process is represented by the letter q. The sign of q for an endothermic process is positive because the system is gaining heat. A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings.