How many BTUs are required to raise 1 lb of water from 32°F to 212°F?

To determine the number of BTUs required to raise 1 pound of water from 32°F to 212°F, you must consider the specific heat of water and the temperature change involved. The specific heat of water is approximately 1 BTU per pound per degree Fahrenheit.

In this case, the temperature change can be calculated as follows:

1. Start at 32°F and aim for 212°F. The difference in temperature is:

[

212°F - 32°F = 180°F

]

2. Since it takes 1 BTU to raise the temperature of 1 pound of water by 1°F, you would multiply the temperature difference by the weight of the water:

[

180°F \times 1 \text{ BTU/lb°F} = 180 \text{ BTUs}

]

This calculation demonstrates that 180 BTUs are required to increase the temperature of 1 pound of water from freezing to boiling. Thus, the answer is accurate and reflects the thermodynamic principles governing the heating of water.