Question

Ifwater cools to body temp.37 degrees C., how many kilocalories of heat could be transferred to sore muscles?

Answer 1

q = mass H2O x specific heat H2O x (Tfinal-Tintial)

You choose the mass H2O
specific heat = 1 Kcal/g
Tfinal = 37
Tinitial = you choose. Of course it can't be 100 C (or even 90C) without causing severe burns.

Answer 2

to calulate the calories(kcal) in 1/2 cup of soft ice cream that contains 16g carbs, 17g fat, 5g protein.
do I multiply
16g x 4 for carbs
17g x 9 for fat
5g x 4 for proteins?
then do I do conversion factors for
grams to 1/2cup? am I on the right road?

Answer 3

Yes, on the right track.
The 16 x 4 will give kcal for carbs.
The 17 x 9 will give kcal for fat.
The 5 x 4 will give kcal for proteins.

Then add all of them together for total kcal.
You don't need to factor in the 1/2 cup because the problem tells you the grams of protein, fat, carbs in the 1/2 cup.