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A sample of octane (C8H18) that has a mass of 0.750 g is burned in a bomb calorimeter. As a result, the temperature of the calorimeter increases from 21.0°C to 41.0°C. The specific heat of the calorimeter is 1.50 J/(g • °C), and its mass is 1.00 kg. How much heat is released during the combustion of this sample? Use mc021-1.jpg. 22.5 kJ 30.0 kJ 31.5 kJ 61.5 kJ

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BlueSky06
The amount of heat for combustion of the sample is equal to the heat that is released in the bomb calorimeter. The equation that may be used in this item is through,
                                      H = mcpdT
where H is heat, m is mass, cp is specific heat, and dT is the difference in temperature.
                                 H = (1000g)(1.50 J/g°C)(41°C - 21°C)
                                      H = 30,000 J = 30 kJ
Thus, the answer is the second choice. 

The amount of heat liberated when a certain amount of a substance undergoes combustion is known as the heat of combustion.The heat of combustion will be 30KJ.

What is the heat of combustion?

The quantity of heat liberated when a certain amount of a substance undergoes combustion is also known as the heat of combustion.

The heat of combustion is given by ;

H = mcpdT

where,

H is heat =? KJ

m is mass =1000 g

[tex]\rm{C_p}[/tex] is the specific heat= 1.50 J/(g°C)

dt is the temperature difference. = [tex]t_2-t_1[/tex]

[tex]\rm {H= mC_pdt}}[/tex]

[tex]\rm {H= 1000\times 1.50\times (41-21)}}[/tex]

H = 30 KJ

Hence the heat of combustion of the sample will be 30KJ.

To learn more about the heat of combustion refer to the link  ;

https://brainly.com/question/25312146  

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