Calculate the amount of heat required to change 5 lb of 32F ice ...

[madam-professor]

Calculate the amount of heat required to change 5 lb of 32F ice to water.
 
  A) No extra heat is required because the ice is already at the melting temperature.
  B) 5 lb  32F  0.5 BTU/lb = 80 BTU
  C) The amount of heat required cannot be calculated without knowing the ending temperature of the water.
  D) 5 lb  144 BTU/lb = 720 BTU

Question 2

What is the head pressure of a tank 10 ft in height?
 
  A) 43.3 psi B) 433 psi C) 0.433 psi D) 4.33 psi

[ktidd]

Answer to Question 1

D

Answer to Question 2

D