c10q12-2
Chapter
West Virginia University
Dr. Robert Belford




Question 1
How much heat (in Joules) is required to raise 32.6 g of Al(s) from 0.0oC to 100.0oC.
(A)  3KJ
(B)  2.9KJ
(C)  2.94KJ
(D)  2,939J
 
Hint

Your response
Not answered yet

Question 2
How much heat is required to raise 28.4 g of Copper from 25.0oC to 350.0oC.

(A)  3.55KJ
(B)  4.41 KJ
(C)  849J
(D)  2.36 KJ
 
Hint

Your response
Not answered yet

Question 3
A 2.36 g sample of unknown material changes temperature from 27.4oC to 39.4oC after 1.79 J of heat are added. What is the heat capacity of this material?
(A)  9.10 J/g.oc
(B)  9.1 J/g.oc
(C)  0.063 J/g.oc
(D)  0.0632 J/g.oc
 
Hint

Your response
Not answered yet

Question 4
A 2.27 g sample of unknown material changes temperature from 12.5oC to 98.7oC after 98.0 J of heat are added. What is the heat capacity of this material?
(A)  2.36 J/g.oc
(B)  2.87 J/g.oc
(C)  0.500 J/g.oc
(D)  5.34 J/g.oc
 
Hint

Your response
Not answered yet

Question 5
A 74.9 g sample of silver at 25.0oC gains 319 J of heat. What is the final temperature of the silver? The specific heat capacity of silver is 0.236J/g0C.
(A)  34.0 oC
(B)  198oC
(C)  43.0 oC
(D)  388oC
 
Hint

Your response
Not answered yet

Question 6
A 2.40 g sample of Iron at 10.00oC gains 250 J of heat. What is the final temperature of the iron?
(A)  240.8oC
(B)  128oC
(C)  567oC
(D)  241oC
 
Hint

Your response
Not answered yet

Question 7
An unknown mass of copper at 98.2 oC is placed in 50.0 g of water at 24.0oC. What is the mass of the copper if the final temperature is 29.8oC?
(A)  46.1g
(B)  36.4g
(C)  88.3g
(D)  46g
 
Hint

Your response
Not answered yet

Question 8
An unknown mass of iron at 354 oC is placed in100.0 g of water at 0.0oC. What is the mass of the iron if the final temperature is 78.0oC?
(A)  138g
(B)  2.62g
(C)  26.2g
(D)  262g
 
Hint

Your response
Not answered yet

Question 9
What is the density of gaseous Fl2 at 0.50 atm and 189oC?
(A)  2.8g/L
(B)  7.8g/L
(C)  0.50g/L
(D)  1.2g/L
 
Hint

Your response
Not answered yet

Question 10
How much heat in Joules is required to melt 32.2 g of ice at 0.0oC?
(A)  10.7KJ
(B)  2.57KJ
(C)  17.4KJ
(D)  72.7KJ
 
Hint

Your response
Not answered yet

Question 11
How much heat in Joules is required to boil 32.2 g of water at 100.0oC?
(A)  10.7 KJ
(B)  2.57 KJ
(C)  17.4KJ
(D)  72.7 KJ
 
Hint

Your response
Not answered yet