To determine how many Calories are present in 4,180 joules, we begin by understanding the relationship between Calories and joules. Specifically, 1 Calorie (kcal) is equivalent to 4,184 joules.
Given:
- Energy in joules: 4,180 joules
- Conversion factor: 1 Calorie = 4,184 joules
To find the number of Calories, we divide the energy in joules by the conversion factor:
[tex]\[ \text{Calories} = \frac{\text{Energy in joules}}{\text{Joules per Calorie}} \][/tex]
[tex]\[ \text{Calories} = \frac{4,180 \text{ joules}}{4,184 \text{ joules/Calorie}} \][/tex]
Performing this division:
[tex]\[ \text{Calories} = 0.9990439770554493 \][/tex]
Thus, 4,180 joules is equivalent to approximately 0.999 Calories.
Reviewing the answer choices:
A. 4,180 calories
B. 1 Calorie
C. 1 calorie
The correct answer, therefore, is:
B. 1 Calorie
