Answer to Question #65816 in Physical Chemistry for umar

Question

Question 13 : If a gas absorbs 1000 J of heat and expands by 0.5
d
m
3
dm3
against a constant pressure of 4 atms (1 atm = 100000 Pa), then the change in internal energy is approximately
-800 J
1200 J
-1200 J
800 J

Question 14 : The specific heat of silver is 0.0565
c
a
l
/
g
/
o
C
cal/g/oC
. Assuming no loss of heat to the surroundings or to the container, calculate the final temperature when 100 g of silver at 40

o
C
oC
is immersed in 60 g of water at 10

o
C
oC
.
21.6

o
C
oC
.
25

o
C
oC

12.6

o
C
oC

16.2

o
C
oC