What amount of heat is required to convert 3.30 g of water at 67.0 °C to 3.30 g of steam at 100.0 °C? (heat capacity of water = 4.184 J/g • °C; AHvap = 40.7 kJ/mol)

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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### Heat Calculation for Water to Steam Conversion

**Question:**

What amount of heat is required to convert 3.30 g of water at 67.0 °C to 3.30 g of steam at 100.0 °C? 

- **Heat capacity of water:** 4.184 J/g°C
- **ΔHvap (Enthalpy of vaporization):** 40.7 kJ/mol

**Explanation of the Calculator Interface:**

The interface features a digital calculator designed to input values and solve chemical equations:

- **Display Screen:** Shows results in kilojoules (kJ).
- **Numeric Keypad:** Includes keys 0-9 for entering numbers.
- **Function Keys:**
  - **C (Clear):** Clears the current input.
  - **x 10^:** Used for scientific notation.
  - **+/-:** Toggles between positive and negative values.
  - **Backspace:** Removes the last digit entered.

This question requires calculating the total heat needed, considering both the temperature change of the water and the phase change from liquid to steam.
Transcribed Image Text:### Heat Calculation for Water to Steam Conversion **Question:** What amount of heat is required to convert 3.30 g of water at 67.0 °C to 3.30 g of steam at 100.0 °C? - **Heat capacity of water:** 4.184 J/g°C - **ΔHvap (Enthalpy of vaporization):** 40.7 kJ/mol **Explanation of the Calculator Interface:** The interface features a digital calculator designed to input values and solve chemical equations: - **Display Screen:** Shows results in kilojoules (kJ). - **Numeric Keypad:** Includes keys 0-9 for entering numbers. - **Function Keys:** - **C (Clear):** Clears the current input. - **x 10^:** Used for scientific notation. - **+/-:** Toggles between positive and negative values. - **Backspace:** Removes the last digit entered. This question requires calculating the total heat needed, considering both the temperature change of the water and the phase change from liquid to steam.
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