heat released by 1.02 g Octane = mw*Cw*delta T
= 1000 g * 4.184 J/goC * (35.3-22) oC
= 55647.2 J
number of moles of Octane = mass/molar mass
= 1.02 g/ (8*12 + 18*1) g/mol
= 8.95*10^-3 mol
H = -55647.2 / (8.95*10^-3)
= -6.219*10^6 J/mol
= -6219 KJ/mol
Answer: -6219 KJ/mol
The heat of combustion of octane, C_8H_18, can be measured in a way similar to the...
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The heat of combustion of octane is -5430 kJ/mol. 1.000 g sample of octane (C8H18) is burned in a bomb calorimeter at an initial temperature of 25.00ºC. The heat capacity of the calorimeter (also known as the “calorimeter constant”) is 837 J/ºC. Calculate E for the combustion of octane. (You will need a balanced chemical equation to find H) What is the final temperature of the calorimeter?
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A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.3320 g sample of naphthalene (C10Hg) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.092x103 g of water. During the combustion the temperature increases from 22.54 to 25.04 °C. The heat capacity of water is 4.184 Jg=1°C-1 The heat capacity of the calorimeter was determined...
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Ignition wires heat sample Thermometer Stirrer or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. A bomb calorimeter In an experiment, a 0.5942 g sample of 1,6-hexanediol (CH1402) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.187x103 g of water. During the combustion the temperature increases from 27.27 to 30.44 °C. The heat capacity of water is 4.184 J gl°c-1. Water...
Ignition wires heat sample Thermometer Stirrer A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter This is known as calibrating the calorimeter In the laboratory a student burns a 0.319-g sample of phenanthrene (C14H10 in a bomb calorimeter containing 1070. g of water....
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A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods.Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter.In the laboratory a student burns a 0.796-g sample of glutaric acid(C5H8O4) in a bomb calorimeter containing 1000. g of water. The temperature increases from 25.70 °C to28.30 °C....