Question

How many btus are required to change one pound of ice at 20°f to steam at 220°f?

Answer 1

To change one pound of ice at 20°F to steam at 220°F, approximately 216,000 BTUs (British Thermal Units) are required.

Step-by-step explanation:

The process of changing a substance from one state to another involves the transfer of heat energy. To calculate the total heat energy required for this transformation, consider the different phases of the substance and their respective heat capacities.

The heat energy required for each phase change can be calculated using the formulas for heating ice to 32°F (melting point), melting ice to water at 32°F, heating water from 32°F to 212°F, boiling water to steam at 212°F, and heating steam from 212°F to 220°F. Adding these individual heat energy values gives the total heat energy required, which is approximately 216,000 BTUs for the given transformation.

Answer 2

To calculate the energy required to change one pound of ice at 20°F to steam at 220°F, we need to find the total heat needed to change the temperature and phase of the substance.

Step-by-step explanation:

To calculate the energy required to change one pound of ice at 20°F to steam at 220°F, we need to find the total heat needed to change the temperature and phase of the substance. The process consists of three stages:

1. Heating the ice from its starting temperature to its melting point
2. Melting the ice at its melting point
3. Heating the water from its melting point to its final temperature

Each stage requires a specific amount of heat, which can be calculated using the formulas for specific heat and latent heat.