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I see the question is about converting energy units. Let me help you with each of the conversions:

1. **818 kJ to J**:
   - 1 kJ = 1000 J
   - So, \( 818 \, \text{kJ} = 818 \times 1000 \, \text{J} = 818,000 \, \text{J} \)

2. **2845 kcal to kJ**:
   - 1 kcal = 4.184 kJ
   - So, \( 2845 \, \text{kcal} = 2845 \times 4.184 \, \text{kJ} = 11,904.68 \, \text{kJ} \)

3. **6.13 × 10⁵ J to kcal**:
   - 1 J = 0.000239006 kcal
   - So, \( 6.13 \times 10^5 \, \text{J} = 6.13 \times 10^5 \times 0.000239006 \, \text{kcal} = 146.54 \, \text{kcal} \)

Here’s the breakdown:
- \( 818 \, \text{kJ} = 818,000 \, \text{J} \)
- \( 2845 \, \text{kcal} = 11,904.68 \, \text{kJ} \)
- \( 6.13 \times 10^5 \, \text{J} = 146.54 \, \text{kcal} \)

Do you need further details or clarifications on any of the steps?

Here are 5 related questions to explore:
1. How do you convert J to kWh?
2. What is the relationship between calories and joules?
3. How do you convert between eV (electron volts) and joules?
4. What is the energy equivalence of 1 kg of mass in joules (from E = mc²)?
5. How do you convert BTUs (British thermal units) to joules?

**Tip:** When converting between units, always make sure to use the correct conversion factors and double-check the units to avoid errors.

Perform the conversions between energy units: Convert 818 kJ to J, 2845 kcal to kJ, and 6.13 × 10⁵ J to kcal.

Learn how to perform energy unit conversions, including converting 818 kJ to J, 2845 kcal to kJ, and 6.13 × 10⁵ J to kcal. This guide covers key concepts in energy and unit conversion, providing a step-by-step solution.

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