16) 3.25 kcal is the same amount of energy as A) 3.25 J. B) 0.777 J. C) 777 J. D) 13600 J. E) 13.6 J.

option D 13600 J

Explanation:

This is actually a simple convertion problem. the energy expressed as heat in calories, has a convertion in Joules.

In the case of cal to Joules is the following:

1 cal > 4.184 J

So, let's convert first the kcal to cal:

3.25 kcal * 1000 cal/kcal = 3250 cal

Now, using the conversion factor of above we have:

J = 3250 cal * 4.184 J/cal

J = 13,598 J or rounded to 13,600 J option D

the answer is c i took the test