Calculate the total entropy change that occurs when 2.00 kg of ...

[Engineer]

Calculate the total entropy change that occurs when 2.00 kg of lead at 40.0C are placed in a very large quantity of water at 10.0C. The specific heat of lead is 0.031 cal/(gK).
 
  A)
 
  190 J/K
 
  B)
 
  100 J/K
 
  C)
 
  6.6 J/K
 
  D)
 
  6.2 J/K
 
  E)
 
  1.4 J/K

Question 2

What precision should you expect for a quantity that you determine by estimation in which variables used in the calculation are rounded to the nearest power of ten?
 
  A)
 
  Two significant figures will always be correct.
  B)
 
  the correct order of magnitude
  C)
 
  Anywhere from two to three significant figures will always be correct.
  D)
 
  One significant figure will always be correct.
  E)
 
  Three significant figures will always be correct.

[jonathanballen97]

Answer to Question 1

E

Answer to Question 2

B

[Engineer]

Excellent

[marict]

Gracias!