Question

If combustion of a 5 g food sample raised the temperature of 200 g of water...

If combustion of a 5 g food sample raised the temperature of 200 g of water by 5 degree celcius, how much total heat energy was given off?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Ans specific heat of water=c=4.18 J/g C, delta T=5 C

       heat enegry supllied to water =Q=mc*delta T

                                                  =5*4.18*5

                                            Q=104.5 J

0 0
Know the answer?
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
Similar Questions
A) Calculate how much energy is required to heat 20.0 mL of water from room temperature...
A) Calculate how much energy is required to heat 20.0 mL of water from room temperature to 40.0 celcius and B)how much energy is released when 20.0mL of water is cooled from the initial temperature to 10.0 celcius.
The combustion of 0.1567 g benzoic acid increases the temperature of a bomb calorimeter by 2.57°C....
The combustion of 0.1567 g benzoic acid increases the temperature of a bomb calorimeter by 2.57°C. Calculate the heat capacity of this calorimeter. (The energy released by combustion of benzoic acid is 26.42 kJ/g.)A 0.2156-g sample of vanillin (C8H8O3) is then burned in the same calorimeter, and the temperature increases by 3.28°C. What is the energy of combustion per gram of vanillin? Per mole?
1. A flask containing 800 g. of water is heated. If the temperature of the water...
1. A flask containing 800 g. of water is heated. If the temperature of the water increases from 20 degrees Celsius to 85 degrees Celsius, how much heat (in joules) did the water absorb? 2. How much heat, in joules, and in calories, must be added to a 75 g. iron block with a specific heat of 0.451 J/g degree Celsius to increase its temperature from 25 degrees Celsius to its melting temperature of 1535 degrees Celsius? 3. Consider sound...
Combustion of 1 g of propane and 15 g of air at 1 atm and 25°C...
Combustion of 1 g of propane and 15 g of air at 1 atm and 25°C yields hot combustion gas. The heat released by combustion (ΔH) of one kg propane is 45 MJ/kg. The energy required to heat one kg of combustion gas one degree C at constant pressure (cp) is 1 kJ/kg/°C. Without heat loss, what is the temperature of the hot combustion gas?
A. When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature...
A. When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature rises 1.644 ∘C . When a 0.275-g sample of caffeine, C8H10O2N4, is burned, the temperature rises 1.585 ∘C . Using the value 26.38 kJ/g for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume. Please show how to do this problem.
Propane (C3H8) burns in oxygen to form carbon dioxide and water. A 0.5000 g sample of...
Propane (C3H8) burns in oxygen to form carbon dioxide and water. A 0.5000 g sample of propane was burned in a bomb calorimeter whose total heat capacity is 17.15 kJ/K. The temperature of the calorimeter apparatus increased by 2.591 K. Calculate the heat of combustion per mole of propane.
when 50 g of ice at 0 degree c is placed in 400 g of water...
when 50 g of ice at 0 degree c is placed in 400 g of water at 55 degree c, the final temperature is 40 degree c. if we ignore any exchange of heat to the surroundings, how much heat does it take to melt 1 g of ice at 0 degree c
14. If 10 g of a metal at 80 degrees cause 100 g of water to...
14. If 10 g of a metal at 80 degrees cause 100 g of water to heat by 3 degrees, what is the specific heat capacity of the metal? 15. How much energy it takes to melt 3.0 g of water (given the enthalpy of fusion of water)? 16. How much energy is released when 50 g of water are cooled from 70 to 20 degrees (given the specific heat capacity of water)?
A 771-g aluminum pot contains 520 g of water. Their temperature is 93.5 degree C. 260...
A 771-g aluminum pot contains 520 g of water. Their temperature is 93.5 degree C. 260 g of water at 1.87 degree C are added to the pot. Calculate the final temperature of the water and the aluminum after they reach thermal equilibrium. Assume no heat is exchanged with the surroundings. Express your answer in degree C.
1. If I mix 200 g of water at 20C with 300 g of water at...
1. If I mix 200 g of water at 20C with 300 g of water at 30C, what will the result be? 2. If I have 250 g of water at 90C, how much water at 25C should I add to make the final temperature be 50C?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT