internal energy

[AMahadi]

How do you calculate internal energy?

[Alice Ma 2K]

The change in internal energy, delta U, is calculated through Q plus W, where Q is the amount of heat transferred into the system and W is the work done on the system.

[Miriam Villarreal 1J]

in the equation ΔU=q+w w=0 and ΔU=q. The internal energy itself , NOT the change is equal to the heat of the system.

[Kayli Choy 2F]

Additionally, if the change in internal energy is positive, then final internal energy is larger than initial internal energy. If the change in internal energy is negative, final internal energy is smaller than initial internal energy. The energy of a closed system can be altered by heating/cooling the system, or compressing/expanding the system, hence the equation delta U = Q + W, where q is heat and w is work.