Question

If an unknown piece of food produced 25 Cal of heat in a calorimetry test and lost 5 g of mass after burning, how many Calories are there in 1 gram of that food?

a. 4.0
b. 5.0
c. 6.0
d. 125.0

Answer 1

There are 5 Calories in 1 gram of the food.

Step-by-step explanation:

To calculate the number of kilocalories per gram in the food, we can use the formula:

kilocalories per gram = total heat produced / mass of the food

In this case, the total heat produced is 25 Cal and the mass of the food is 5 g. So, kilocalories per gram = 25 Cal / 5 g = 5 Cal/g.

Therefore, there are 5 Calories in 1 gram of that food.