Question

Which of the following is commonly used on food packages to measure the energy content?
Joule
calorie
Calorie
kilocalorie

Answer 1

I think the answer is Calorie. The third option.

Answer 2

Answer:

Calorie

Explanation:

One of the units used to measure energy is 'calorie'. However, the energy content of food (nutritional calories) is expressed in terms of 'Calories' with a capital 'C'.

It can be expressed in different ways, i.e.

1 Calorie = 1000 cal or

1 Calorie = 1 kcal, or

1 Calorie = 4184 Joules

The heat content (q) or Calories of a food item can be experimentally measured by burning it in a device known as a bomb-calorimeter and measuring the raise in temperature. The mathematical expression for the process is:

$q = mc\Delta T$

where m = mass of the substance

c = specific heat of the substance

ΔT = rise in temperature