Ice cubes from the freezer weigh about 25 g and are at a temperature of -15.0 °C. Suppose I have a glass of ice tea (250 mL, 250.0 g), which is essentially all H₂O, at room temperature (22.0 °C) and I want to use ice cubes to cool it down to the temperature of a refrigerator (4.0 °C, 40 °F). How many ice cubes do I need to use? In order words, what mass of ice cubes are needed to get the combined system to 4.0 °C?
Ice cubes from the freezer weigh about 25 g and are at a temperature of -15.0 °C. Suppose I have a glass of ice tea (250 mL, 250.0 g), which is essentially all H₂O, at room temperature (22.0 °C) and I want to use ice cubes to cool it down to the temperature of a refrigerator (4.0 °C, 40 °F). How many ice cubes do I need to use? In order words, what mass of ice cubes are needed to get the combined system to 4.0 °C?
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer by using values from table please
Transcribed Image Text:The image appears to be a table presenting the thermodynamic properties of various substances. Here is a transcription and explanation tailored for an educational website:
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**Thermodynamic Properties of Selected Substances**
The table contains thermodynamic data for various substances, detailing standard enthalpy changes and related thermodynamic values. This information is essential for understanding chemical reactions and their energetic consequences.
### Substances:
1. **Gold (Au) in gaseous form:**
- **Enthalpy Change (kJ/mol):** +366.1
- Additional values: +326.3, 180.50, 20.79
2. **Helium (He) in gaseous form:**
- **Molar Mass (g/mol):** 4.003
- **Enthalpy Change (kJ/mol):** 0
- Additional values: 126.15, 20.786
3. **Hydrogen (see also deuterium):**
Various forms are considered:
- **H₂ (gaseous form):**
- **Molar Mass (g/mol):** 2.016
- **Enthalpy Change (kJ/mol):** 0
- Additional values: 130.684, 28.824
- **H (gaseous form):**
- **Molar Mass (g/mol):** 1.008
- **Enthalpy Change (kJ/mol):** +217.97
- Additional values: +203.25, 114.71, 20.784
- **H⁺ (aqueous form):**
- **Molar Mass (g/mol):** 1.008
- **Enthalpy Change (kJ/mol):** 0
- Additional value: +1536.20, 0, 0
4. **Dihydrogen monoxide (Water - H₂O):**
Different states are analyzed:
- **H₂O (solid form):**
- **Molar Mass (g/mol):** 18.015
- **Enthalpy Change (kJ/mol):** −285.83
- Additional values: −237.13, 69.91, 75.291
- **H₂O (liquid form):**
- **M
Transcribed Image Text:Ice cubes from the freezer weigh about 25 g and are at a temperature of -15.0 °C. Suppose I have a glass of ice tea (250 mL, 250.0 g), which is essentially all H₂O, at room temperature (22.0 °C) and I want to use ice cubes to cool it down to the temperature of a refrigerator (4.0 °C, 40 °F). How many ice cubes do I need to use? In other words, what mass of ice cubes are needed to get the combined system to 4.0 °C?
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