# Chemistry

posted by .

You burned a peanut that weights 5.0 grams underneath a calorimeter with 409 mL of water in it. The thermometer reading increased from 21.6 C to 45.5 C. After burning, the peanut weighs 3.43 grams. How many Joules would be released when 1 gram of peanut if burned?

• Chemistry -

How much heat was released in the experiment?
q = mass H2O x specific heat H2O x (delta T) = ?joules.
What mass of peanut was consumed? That is 5.00g - 3.43 = 1.57g.

So ?joules energy x (1.00/1.57) = xx joules for 1.00 g.

• Chemistry -

Calculate the heat needed at 0 degrees Celsius in each of the following: joules to melt 65.0g of ice

## Similar Questions

1. ### Physical Science

A 0.6-g peanut is burned beneath 50 g of water, which increases in temperature from 22degreesC to 50 degreesc. What is the exact food value of the peanut?
2. ### Physics - heat

A .6 gm peanut is burned beneath 50g of water, which increases the temperature from 22 degrees to 50 degrees centigrade. Assuming 40% efficiency, show that the peanut's food value is 3500 calories.
3. ### Chemistry

In lab we conducted a calorimetry experiment with a peanut. We burned a half a peanut and placed it underneath a pop can with 50mL of water inside. One of our questions is why heat transfer to the pop can isn't accounted for when calculating …
4. ### health, safety and nutrition

Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. what percent of the calories come from that?
5. ### Math

Maggie's surprise gift weighs between 8.48 grams and 11.25 grams. Which of these weights could be the weight of the gift?
6. ### chemistry

The peanut studied had a mass of 0.609 g before combustion and 0.053 g after combustion. The energy released during combustion caused a 14.2 degree Celsius increase in the temperature of 200.0 mL water in the calorimeter. Calculate …
7. ### physics

If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 185 grams, what is the specific heat, …
8. ### physics

If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 189 grams, what is the specific heat, …
9. ### chemistry

a student burns a peanut in a calorimeter. she places 10 ml of water in a test tube. she weighs a peanut before and after burning it. It weighs 3 grams before and 1 gram after burning. She determines that the temperature was at 20 …
10. ### Chem 1150

One tablespoon of peanut butter has a mass of 17g . It is combusted in a calorimeter whose heat capacity is 130kJ/∘C . The temperature of the calorimeter rises from 22.5∘C to 25.3∘C. Find the food caloric content …

More Similar Questions