Ask Question
3 June, 13:46

How does the calorie compare to the metric unit the joule? How do you calculate a calorie? Is it the same for all types of food?

+4
Answers (1)
  1. 3 June, 14:46
    0
    Calorie (cal) or small calorie, is the amount of energy needed to heat one gram of water by one degree Celsius.

    One small calorie is approximately 4.2 joules.

    A calorie is a unit of energy.

    For example:

    Q = 150000 J; released energy.

    Convert Jules in calories:

    Q = 150000 J : 4.186 J/calorie.

    Q = 35833.73 calorie.

    The large calorie or nutritional calorie (symbols: Cal, kcal) is the heat energy needed to raise the temperature of one kilogramof water by one degree Celsius.

    A nutritional calorie, or kilocalorie, is equal to 1000 calories.

    One large calorie is 4.184 kilojoules: 1 Cal = 4.184 kJ.

    For example:

    E = 2500 Cal; energy burnt.

    E = 2500 Cal · 4.184 kJ/Cal.

    E = 10460 kJ.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “How does the calorie compare to the metric unit the joule? How do you calculate a calorie? Is it the same for all types of food? ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers