question archive On food labels, we can read the food-calories of the product
On food labels, we can read the food-calories of the product
Subject:PhysicsPrice:3.87 Bought7
On food labels, we can read the food-calories of the product. The food calorie is written as “Cal” and it corresponds to 1,000 calories with the lower case ‘c’. In summary, one food-calorie = 1 kcal = 1 Cal = 4,186 Joules
How many Joules will be released by combustion of 1 kg of rice, if rice has 3,200 food-calories per kilogram?
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Answer:
1 food-calorie =1 kcal =1 Cal =4186 Joules
So, energy released by combustion of 1 kg of rice = 3200 food-calories
= 3200 x 4186 Joules
= 13.3952 x 106 Joules
