Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C. Assume no changes in state occur during this change in temperature. heat added: cal Which substance requires the greatest input of heat energy? O brick
Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C. Assume no changes in state occur during this change in temperature. heat added: cal Which substance requires the greatest input of heat energy? O brick
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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![**Question:**
Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C. Assume no changes in state occur during this change in temperature.
**Input Field:**
- Heat added: ________ cal
**Multiple Choice Question:**
Which substance requires the greatest input of heat energy?
- [ ] brick
- [ ] wood
- [ ] ethanol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F70f2a07f-cca2-4113-a5cc-66eaeaf27170%2F136d2e6c-4b60-41af-9edf-cb99958079be%2Fjocvohw.jpeg&w=3840&q=75)
Transcribed Image Text:**Question:**
Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C. Assume no changes in state occur during this change in temperature.
**Input Field:**
- Heat added: ________ cal
**Multiple Choice Question:**
Which substance requires the greatest input of heat energy?
- [ ] brick
- [ ] wood
- [ ] ethanol
![**Specific Heats of Substances**
| Substance | Specific Heat (cal/g°C) |
|-----------|-------------------------|
| Brick | 0.20 |
| Ethanol | 0.58 |
| Wood | 0.10 |
**Instructions:**
1. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of brick from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
2. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of ethanol from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
3. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
**Explanation:**
This content focuses on calculating the heat required to raise the temperature of different substances. Using the formula:
\[ \text{Heat (cal)} = \text{mass (g)} \times \text{specific heat (cal/g°C)} \times \Delta T (\text{°C}) \]
Where:
- Mass is the amount of substance in grams.
- Specific heat is a property that indicates how much heat energy is needed to change the temperature of a substance.
- \(\Delta T\) is the change in temperature (final temperature - initial temperature).
Use this formula to find the heat required for brick, ethanol, and wood.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F70f2a07f-cca2-4113-a5cc-66eaeaf27170%2F136d2e6c-4b60-41af-9edf-cb99958079be%2Frop4bn.jpeg&w=3840&q=75)
Transcribed Image Text:**Specific Heats of Substances**
| Substance | Specific Heat (cal/g°C) |
|-----------|-------------------------|
| Brick | 0.20 |
| Ethanol | 0.58 |
| Wood | 0.10 |
**Instructions:**
1. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of brick from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
2. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of ethanol from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
3. **Calculate the amount of heat, in calories, that must be added to warm 62.9 g of wood from 20.8 °C to 46.1 °C.** Assume no changes in state occur during this change in temperature.
- Heat added: _______ cal
**Explanation:**
This content focuses on calculating the heat required to raise the temperature of different substances. Using the formula:
\[ \text{Heat (cal)} = \text{mass (g)} \times \text{specific heat (cal/g°C)} \times \Delta T (\text{°C}) \]
Where:
- Mass is the amount of substance in grams.
- Specific heat is a property that indicates how much heat energy is needed to change the temperature of a substance.
- \(\Delta T\) is the change in temperature (final temperature - initial temperature).
Use this formula to find the heat required for brick, ethanol, and wood.
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