A serving of french fries

releases 320 kcal (1 kcal =

4.18 kJ) when digested by your

body. If this same amount of

energy were transferred to 1.5

kg of water at 30°C, what

would the final temperature

Question

Lawson Webster

Physics

19 February, 06:55

A serving of french fries

releases 320 kcal (1 kcal =

4.18 kJ) when digested by your

body. If this same amount of

energy were transferred to 1.5

kg of water at 30°C, what

would the final temperature

+3

Answers (1)

Know the Answer?

Mira Gonzalez · Answer 1

320 k Cal = 320 x 4.18 k J

= 1337.6 kJ

For rise in temperature the formula is

Q = m s Δ T

Q is heat added, m is mass of the water to which heat is added, s is specific heat of water, Δ T is rise in temperature.

1337.6 x 10³ = 1.5 x 4.18 x 10³ x Δ T (specific heat of water is 4.18 kJ per kg.)

ΔT is more than 70 degree. That means, heat is sufficient to boil it.

So final temperature will be 100 degree Celsius.

A serving of french friesreleases 320 kcal (1 kcal =4.18 kJ) when digested by yourbody. If this same amount ofenergy were transferred to 1.5kg of water at 30°C, whatwould the final temperature

A serving of french fries

releases 320 kcal (1 kcal =

4.18 kJ) when digested by your

body. If this same amount of

energy were transferred to 1.5

kg of water at 30°C, what

would the final temperature