Calculate the amount of heat required to change 5 pounds of 212° water to steam
A) 5lbs × 212°F × 1 BTU/lb = 1060 BTUs
B) 5 lbs × 970 BTUs/lb = 4850 BTUs
C) No extra heat is required because the water is already at the boiling point.
D) The amount of heat required cannot be calculated without knowing the starting temperature of the water.
B
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