Question

Could anyone help me with a Calorimetry question?

A nutritionist burns 28 grams of corn chips. The heat released raises 5,000 mL of water from 22°C to 54°C. Complete the table below, assuming the corn chips are completely burned and all the heat is absorbed by the water. Complete the table for 61 g of tomatoes if the same setup is used and the temperature increases by 4°C.

I have to fill out a table with information as well. Any help is appreciated :)

Answer 1

@astro15

Answer 2

you failed to indicate the information asked for on the table

Answer 3

Yeaaahhhh writing down the table probably would have been helpful... Sorry ;P Because I can't post the table itself, here is the data they're asking for:

1) For both the tomatoes and the corn chips, find the:

a) Mass of water (g) (I can find this on my own, nbd)
b) Heat capacity of water (J/g C)
c) Change in temperature (Again, I can find this)
d) Total released energy

2) How much heat (in Joules) is released by the combustion
of the corn chips? ________
of the tomatoes? ________

3) Compare the calories in one gram of tomatoes to the calories in one gram of corn chips

Answer 4

1.

b) the heat capacity of water is 4.18 J/g*\(^oC\)

d) use \(\sf q_{released}=m_{H_2O}C_p^{H_2O}\Delta T\)

m is mass of water
\(C_p\) is the specific heat capacity of water (see b)
\(\Delta T\) is the change in temperature
q is the energy released

2. it seems like they want you to repeat step 1 d) here

3. Divide the energy released by the grams of substance (chips/tomatoes) used - for each substance separately.

Answer 5

Thank you!!!

Answer 6

no problem !