Question

A gas in a piston is compressed doing -439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. +w = expansion. +q = added, +u = temp goes up)

(unit = j)

Answer 1

-121 J

Step-by-step explanation:

w= -439 J

Q = ?

U= 318 J

U = Q-W

Q= U+W

= 318+(-439)

= 318-439

= -121 J

MINUS SIGN SHOWS HEAT FLOWS