Final answer:
1,500,000 calories is equivalent to 6,276 kilojoules when converted using the factor 1 kcal (1,000 calories) = 4,184 Joules.
Step-by-step explanation:
To convert calories to kilojoules, we use the conversion factor where 1 food calorie (Cal, also known as a kilocalorie) is equal to 4,184 Joules. In energy terms, 1,500,000 calories equal 1,500 kilocalories (since 1 kcal = 1,000 calories). Therefore, using the conversion factor, we can determine how many kilojoules 1,500 kilocalories are:
1,500 kcal × 4.184 kJ/kcal = 6,276 kilojoules
So, 1,500,000 calories is equivalent to 6,276 kilojoules.