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The problem displayed involves calculating the total amount of heat released when 5.00 grams of water vapor condenses from its gaseous phase to the liquid phase at a pressure of 101.3 kPa and a temperature of 373 K. The equation for this phase change is given as:

\[
\text{H}_2\text{O}(\text{g}) \rightarrow \text{H}_2\text{O}(\ell) + \text{heat}
\]

To solve this, you would typically use the heat of vaporization of water, which is the amount of heat required to convert water from a liquid to a gas (or vice versa). At 373 K (the boiling point of water), the latent heat of vaporization of water is approximately **2260 J/g**.

### Calculation:

\[
\text{Heat released} = \text{mass} \times \text{heat of vaporization}
\]

\[
\text{Heat released} = 5.00 \, \text{g} \times 2260 \, \text{J/g} = 11300 \, \text{J}
\]

The answer shown in the box (1045 J) might be incorrect based on the heat of vaporization value, as the correct result should be approximately 11300 J for 5 grams of water vapor. Would you like to discuss this further or ask for clarifications?

### Related Questions:
1. What is the latent heat of vaporization for other common substances?
2. How does pressure affect the boiling point of water?
3. Why does the heat of vaporization not change significantly at constant pressure and temperature?
4. What happens at the molecular level during condensation?
5. Can you explain the difference between latent heat and sensible heat?

### Tip:
Always ensure you use the correct values for constants like the heat of vaporization for accurate calculations, especially in phase change problems.

At a pressure of 101.3 kilopascals and a temperature of 373 K, heat is removed from a sample of water vapor, causing the sample to change from the gaseous phase to the liquid phase. Determine the total amount of heat released by 5.00 grams of water vapor during this phase change.

Learn how to calculate the total heat released when 5 grams of water vapor condenses at 373 K and 101.3 kPa. This involves applying the latent heat of vaporization formula, suitable for high school thermodynamics.

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