Question

457kCal, convert to KJ
[18] = 4.184kCan]

Answer 1

To convert 457 kcal to kilojoules, multiply by the conversion factor of 4.184 kJ/kcal, resulting in 1912.088 kJ.

Step-by-step explanation:

The student is asking to convert calories to kilojoules. Given that 1 food calorie (kcal) is equivalent to 4.184 kilojoules (kJ), you can convert the provided energy value by multiplying the number of calories by this conversion factor.

To convert 457 kcal to kJ:

1. Use the conversion factor: 1 kcal = 4.184 kJ.
2. Multiply the energy value in kcals by the conversion factor.
3. 457 kcal × 4.184 kJ/kcal = 1912.088 kJ.

Thus, 457kCal is equivalent to 1912.088 kJ.