What is the change in entropy when 50 g of ice melt at 0C? A) ...

[bobbysung]

What is the change in entropy when 50 g of ice melt at 0C?
 
  A)
 
  14.7 cal/K
 
  B)
 
  4.0 kcal/K
 
  C)
 
  zero
 
  D)
 
  -4.0 kcal/K
 
  E)
 
  -14.7 cal/K

Question 2

Beta rays can penetrate
 
  A)
 
  air only.
  B)
 
  a piece of paper.
  C)
 
  several millimeters of aluminum.
  D)
 
  several centimeters of lead.
  E)
 
  several meters of iron.

[xthemafja]

Answer to Question 1

A

Answer to Question 2

C

[bobbysung]

Thanks for the timely response, appreciate it

[Sarahjh]

Gracias!