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

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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
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.
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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