HomeworkLib
Question

In an experiment to determine the caloric value of food, a sample of food was burned...

In an experiment to determine the caloric value of food, a sample of food was burned in an oxygen atmosphere and the temperature rose by 2.89°C. When a current of 1.27 A from a 15v source flowed through the same calorimeter for 160 seconds, the temperature rose by 4 °C. What is the heat released by the combustion?

science   Advanced-Physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Solutione ien that peratur (t): 2-89 5V Sour Ce Lime6oSec Assume heat 12 15 change b heat Energy Yatio2 3,0u8 62 9308 18

0 0
Add a comment
Know the answer?
Add Answer to:
In an experiment to determine the caloric value of food, a sample of food was burned...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • In an experiment to determine the caloric content of a granola bar, a 0.5 g sample...

    In an experiment to determine the caloric content of a granola bar, a 0.5 g sample of the bar was burned in an oxygen atmosphere and the temperature rose by 11.12 oC. In a separate experiment using the same calorimeter, a 1.27 A current from a 12.5 V source was applied for 180 s and the temperature rose 3.88 oC. (a) Calculate the heat capacity of the calorimeter. (The heat produced by electric elements is as follows: q = IVt)...

  • Determine the heat of combustion of sucrose (C12H22O11) in kJ/mol if 2.00g of sucrose is burned...

    Determine the heat of combustion of sucrose (C12H22O11) in kJ/mol if 2.00g of sucrose is burned in a bomb calorimeter, and the temperature of the calorimeter rose from 25.33C to 28.17C. The heat capacity of the calorimeter is 11.6kJ/C.

  • Heat Capacity and Calorimetry A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an...

    Heat Capacity and Calorimetry A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25C to 33.73C. If the heat capacity of the calorimeter and contents is 9.63kJ/C, what is the value of q for burning 1.00 lol of ethanol at constant volume and 25.00C. Is q equal to U or H? 214e Questions and Problems the enthalpy change when 0.710 mol of calcium...

  • When a 3.08 g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the...

    When a 3.08 g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 26.9 oC. The heat capacity of the calorimeter, measured in a separate experiment, is 6.22 kJ/∘C . The calorimeter also contains 3.00 kg of water, specific heat capacity of 4.18 J/g°C. Determine the heat of combustion of octane in units of kJ/mol octane.

  • 7. A 2.548-9 sample of valine, CsH ,NO, (117.15 g/mol) was burned in a bomb calorimeter...

    7. A 2.548-9 sample of valine, CsH ,NO, (117.15 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 18.42 °C, after combustion the calorimeter and the water had a temperature of 29.13 °C. The calorimeter had a heat capacity of 633 J/K, and contained 1.255 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of valine.

  • A 1.764-g sample of heptanoic acid, C7H14O2 (130.19 g/mol) was burned in a bomb calorimeter with...

    A 1.764-g sample of heptanoic acid, C7H14O2 (130.19 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 23.68 °C; after combustion the calorimeter and the water had a temperature of 32.12 °C. The calorimeter had a heat capacity of 500 J/K, and contained 1.462 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of heptanoic acid.

  • 7. A 2.053-g sample of ethylene glycol, CH.02 (62.07 g/mol) was burned in a bomb calorimeter...

    7. A 2.053-g sample of ethylene glycol, CH.02 (62.07 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 16.49 °C; after combustion the calorimeter and the water had a temperature of 23.12 °C. The calorimeter had a heat capacity of 567 J/K, and contained 1.316 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of ethylene glycol.

  • 7. A 2.529-g sample of glutaric acid, CsH.O.(132.12 g/mol) was burned in a bomb calorimeter with excess oxygen. The...

    7. A 2.529-g sample of glutaric acid, CsH.O.(132.12 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 23.63 °Cafter combustion the calorimeter and the water had a temperature of 32.48 °C. The calorimeter had a heat capacity of 747 J/K, and contained 0.926 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of glutaric acid.

  • 1a) Consider the reaction: C12H22O11(s)+12O2(g)→12CO2(g)+11H2O(l) in which 10.0 g of sucrose, C12H22O11, was burned in a...

    1a) Consider the reaction: C12H22O11(s)+12O2(g)→12CO2(g)+11H2O(l) in which 10.0 g of sucrose, C12H22O11, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/∘C. The temperature increase inside the calorimeter was found to be 22.0 ∘C. What is the heat of this reaction per mole of sucrose? 1b) One tablespoon of peanut butter has a mass of 17.0 g. It is combusted in a calorimeter whose heat capacity is 110 kJ/°C. The temperature of the calorimeter rises from 21.6...

  • A 0.437-g sample of benzil (C4HO2) is burned in a bomb calorimeter and the temperature increases...

    A 0.437-g sample of benzil (C4HO2) is burned in a bomb calorimeter and the temperature increases from 24.50 C to 27.30 C. The calorimeter contains 1.04x10^3 g of water and the bomb has a heat capacity of 884 JC. Based on this experiment, calculate AE for the combustion reaction per mole of benzil burned (k/mol)

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT