Convert between energy units. a. 231 cal to kJ b. 132×10⁴ kJ to kcal d. 2.88×10⁴ J to Cal

Verified step by step guidance

1. Step 1: Identify the conversion factors needed for each part of the problem. For energy conversions, remember that 1 cal = 4.184 J and 1 kcal = 4.184 kJ.
2. Step 2: For part (a), convert calories to kilojoules. Use the conversion factor 1 cal = 4.184 J to first convert calories to joules, then convert joules to kilojoules by dividing by 1000.
3. Step 3: For part (b), convert kilojoules to kilocalories. Use the conversion factor 1 kcal = 4.184 kJ to convert kilojoules to kilocalories by dividing the kilojoules by 4.184.
4. Step 4: For part (d), convert joules to Calories (note that 1 Cal = 1 kcal). First, convert joules to kilojoules by dividing by 1000, then convert kilojoules to kilocalories using the conversion factor 1 kcal = 4.184 kJ.
5. Step 5: Ensure all units are correctly converted and check your calculations for accuracy. Remember to keep track of significant figures based on the given data.