Final answer:
The fuel value of a 38-gram serving with 38 Calories is 159.192 kJ, calculated by converting Calories to joules and then to kilojoules.
Step-by-step explanation:
To calculate the fuel value in kJ for a 38-gram serving that contains 38 Calories, we need to convert Calories to joules and then to kilojoules. We use the conversion factor that 1 food Calorie (C) is equal to 4184 joules. Therefore, 38 Calories is equivalent to 38 × 4184 J, which equals 159,192 J. To convert joules to kilojoules (kJ), we divide by 1000, resulting in 159.192 kJ.