1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature

increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming

all of the energy from the food was transferred into the water?

Question

Peter Bright

Chemistry

5 April, 22:07

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature

increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming

all of the energy from the food was transferred into the water?

+2

Answers (1)

Know the Answer?

Zavier Horton · Answer 1

86606 calories of energy was transferred from the 2000gm of food into the water.

Explanation:

1 kilocalorie of energy is required to raise 1 degree of temperature increase. in 1 kg of water.

It is also said that amount of energy or heat released in food combustion is equal to the heat absorbed by water in the combustion chamber.

1 kilocalorie=4.184 kJ

Amount of water = 2000g or 2 kg

Temperature change = 44.3-22 degree celsius

= 22.3 degree celsius

2kg*22.3 = 44.6 Kilocalorie of energy input.

equation to calculate the energy in calories

q=mc (change in temperature)

specific heat capacity of water is 4.184

= 2*4.184*22.3

q = 186.60 Kj

To convert into gm

186.60*1000

= 186606 calories of energy was transferred from the 2000gm of food into the water.

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperatureincreases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assumingall of the energy from the food was transferred into the water?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature

increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming

all of the energy from the food was transferred into the water?