In beta minus decay, the number of neutrons in the nucleus A) ...

[abarnes]

In beta minus decay, the number of neutrons in the nucleus
 
  A)
 
  is decreased by 1.
  B)
 
  is decreased by 2.
  C)
 
  is increased by 1.
  D)
 
  is increased by 2.
  E)
 
  remains unchanged.

Question 2

A 2.00-kg block of aluminum at 50.0 C is dropped into 5.00 kg of water at 20.0 C. What is the change in entropy during the approach to equilibrium, assuming no heat is exchanged with the environment?
 
  The specific heat of aluminum is 0.22 cal/(gK).
  A)
 
  8.08 J/K
  B)
 
  10.1 J/K
  C)
 
  3.25  10-2 J/K
  D)
 
  3.80  10-3 J/K
  E)
 
  2.41  10-3 J/K

[rachel]

Answer to Question 1

A

Answer to Question 2

A