5. 5. If 20,000 J of energy are used to heat mercury by 4.00 °C, what is the mass of mercury? 6. Determine the specific heat of aluminum if adding 4.750 kJ of heat energy to 249.0 g of aluminum produces a temperature change of 21.1 °C

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**Table: Results of Heat Capacity Trials**

| Trial | Substance | Mass (grams) | ΔT (°C) | Added Energy (Joules) |
|-------|-----------|--------------|---------|-----------------------|
| 1     | Hg        | 100.0        | 71.0    | 1,000.0               |
| 2     | Hg        | 100.0        | 142     | 2,000.0               |
| 3     | H₂O       | 100.0        | 2.39    | 1,000.0               |
| 4     | H₂O       | 100.0        | 4.78    | 2,000.0               |

**Explanation:**
This table represents the results of experiments conducted to measure the temperature change (ΔT) of two substances, Mercury (Hg) and Water (H₂O), when a specific amount of energy is added. Each trial uses a 100-gram sample of the substance.

- **Trial 1 and 2**: Mercury is subjected to 1,000 and 2,000 Joules of energy respectively. The resulting temperature changes are 71.0°C and 142°C.
- **Trial 3 and 4**: Water is subjected to 1,000 and 2,000 Joules of energy respectively. The resulting temperature changes are 2.39°C and 4.78°C.

This illustrates the different specific heat capacities of the two substances, where a smaller temperature change in water indicates a higher specific heat capacity compared to mercury.
Transcribed Image Text:**Table: Results of Heat Capacity Trials** | Trial | Substance | Mass (grams) | ΔT (°C) | Added Energy (Joules) | |-------|-----------|--------------|---------|-----------------------| | 1 | Hg | 100.0 | 71.0 | 1,000.0 | | 2 | Hg | 100.0 | 142 | 2,000.0 | | 3 | H₂O | 100.0 | 2.39 | 1,000.0 | | 4 | H₂O | 100.0 | 4.78 | 2,000.0 | **Explanation:** This table represents the results of experiments conducted to measure the temperature change (ΔT) of two substances, Mercury (Hg) and Water (H₂O), when a specific amount of energy is added. Each trial uses a 100-gram sample of the substance. - **Trial 1 and 2**: Mercury is subjected to 1,000 and 2,000 Joules of energy respectively. The resulting temperature changes are 71.0°C and 142°C. - **Trial 3 and 4**: Water is subjected to 1,000 and 2,000 Joules of energy respectively. The resulting temperature changes are 2.39°C and 4.78°C. This illustrates the different specific heat capacities of the two substances, where a smaller temperature change in water indicates a higher specific heat capacity compared to mercury.
**5. Problem Statement:**
"If 20,000 J of energy are used to heat mercury by 4.00 °C, what is the mass of mercury?"

---

**6. Problem Statement:**
"Determine the specific heat of aluminum if adding 4,750 kJ of heat energy to 249.0 g of aluminum produces a temperature change of 21.1 °C."
Transcribed Image Text:**5. Problem Statement:** "If 20,000 J of energy are used to heat mercury by 4.00 °C, what is the mass of mercury?" --- **6. Problem Statement:** "Determine the specific heat of aluminum if adding 4,750 kJ of heat energy to 249.0 g of aluminum produces a temperature change of 21.1 °C."
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