Question

**WILL ALWAYS FAN+MEDAL**

Does anybody know how to:

Calculate the change in enthalpy in calorimeter reactions?

Answer 1

Calorimetry Lab

In this lab activity, you are asked to use data from a calorimeter to calculate changes in enthalpy. Use 4.18 J/ (g °C) for the specific heat of water.
Answer the questions using the data provided
1. You place 3.52 g of sodium hydroxide to dissolve in a calorimeter cup. The cup contains 1,000.0 mL of water at 20.00°C (in a calorimeter cup). As the sodium hydroxide dissolves, the temperature of the surrounding water increases to 23.70°C.

Complete the table below and determine the total energy released.
Use the formula .

Mass of Water (g) Heat Capacity of Water (J/(g °C)) Change in Temperature (°C) Total Energy Released (J)


Using the calculation in the previous table and the total amount of sodium hydroxide, determine the change in enthalpy of the solution in J/g of sodium hydroxide.
_____________ ________



2. A nutritionist burns 28.0 grams of corn chips. The heat released raises 5,000.0 mL of water from 22.0°C to 54.0°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 61.0 g of tomatoes if the same setup is used and the temperature increases by 4.00°C.



Food Item Mass of Water (g) Heat Capacity of Water (J/(g °C)) Change in Temperature (°C) Total Energy Released (J)
corn chips
tomatoes



How much heat (in Joules/g) is released by the combustion of the following:
corn chips ________
tomatoes ________



When you discuss calories in food, you are talking about kilocalories (Kcal), which is the amount of heat necessary to raise 1,000.0 mL of water by 1 degree Celsius, which is approximately4.18kJ.

Compare the number of kilocalories in one gram of tomatoes to the number of kilocalories in one gram of corn chips

Answer 2

@january123 @jackoo @mr.420 @dan815 @Luigi0210 @hayhayman @lordofpens @Nerdgirl @charlie7770 @G-unit @geekgirl1000 @ashton_gates2131

Answer 3

@StudyShark2000 @SyedMohammed98 @glamourariss @perl @pooja195 @shifuyanli

Answer 4

Sorry girl, Idk I'm only in Chem 1. D:

Answer 5

Its all good, and if ever need help you are welcome to tag me :)

Answer 6

I tagged you!

Answer 7

Thanks :)

Answer 8

I'm not sure what you're trying to achieve by posting the whole lab..

why dont you instead try to post a specific question, have got any done?

what part are you having trouble with?

Answer 9

I dont get what it's trying 2 telll me

Answer 10

So all of it!!

Answer 11

@aaronq