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Chemistry
Chemistry
Problem
A system has internal energy equal to
U
i
=
450
U_i = 450
U
i
=
450
J of heat is taken out of it and 600 J of work is done on it. The final energy of the system will be - (1)
U
f
=
+
150
U_f = +150
U
f
=
+
150
(2)
U
f
=
+
1050
U_f = +1050
U
f
=
+
1050
(3)
U
f
=
−
150
U_f = -150
U
f
=
−
150
(4) None of these
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