Question

The first law of thermodynamics is as follows: ∆U=Q-W , which means ___ in a system is equal to ____ added, minus ____ done by the system. the units for these variables are in ____ .

Answer 1

this is first law of thermodynamics in which meaning of each term is given as

$\Delta U$ = change in internal energy

Q = Heat given to the system

W = work done by the system

so here we will have

∆U=Q-W , which means Change in internal energy in a system is equal to heat given added, minus work done by the system. the units for these variables are in joule .