Answer to Question #65762 in Physical Chemistry for muhd

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
Question 15 : The molar heat capacity of Al is 24.4 J/mol/
o
C
oC. How much heat energy is required to heat 100 g of Al from 20
o
C
oC to 80
o
C
oC? (Al = 27)
5422 J
813000 J
146000 J
30000 J
Question 16 : A process taking place at constant pressure is termed –
Adiabatic
Isothermal
Isobaric
Isochoric

Answer 1

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