What is enthalpy and how is it different than heat?

Heat is a transfer of energy due to a temperature difference. Enthalpy is the change in amount of heat in a system at constant pressure.

Explanation:

Heat is a transfer of energy due to a temperature difference. Enthalpy is the change in amount of heat in a system at constant pressure. You can only use heat and enthalpy interchangeably if there is no work being done to the system.

Explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

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