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Combustion (bomb) calorimeter. In an experiment, a ( 0.4840 mathrm{~g} ) sample of pyrene ( left(mathrm{C}_{16} mathrm{H}_{10} ight) ) is burned completely in a bomb calorimeter. The calorimeter is surrounded by ( 1.170 imes 10^{3} mathrm{~g} ) of water. During the combustion the temperature increases from 23.76 to ( 26.87^{circ} mathrm{C} ). The heat capacity of water is ( 4.184 mathrm{~J} cdot mathrm{g}^{-1} cdot{ }^{circ} mathrm{C}^{-1} ). The heat capacity of the calorimeter was determined in a previous experiment to be ( 949.4 mathrm{~J} cdot{ }^{circ} mathrm{C}^{-1} ). Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of pyrene based on these data. [ mathrm{C}_{16} mathrm{H}_{10}(s)+(37 / 2) mathrm{O}_{2}(g) ightarrow 5 mathrm{H}_{2} mathrm{O}(l)+16 mathrm{CO}_{2}(g)+ ext { Energy } ] Molar Heat of Combustion ( = ) ( mathrm{kJ} / mathrm{mol} ) Submit Answer

          Combustion (bomb) calorimeter.
In an experiment, a ( 0.4840 mathrm{~g} ) sample of pyrene ( left(mathrm{C}_{16} mathrm{H}_{10}
ight) ) is burned completely in a bomb calorimeter. The calorimeter is surrounded by ( 1.170 	imes 10^{3} mathrm{~g} ) of water. During the combustion the temperature increases from 23.76 to ( 26.87^{circ} mathrm{C} ). The heat capacity of water is ( 4.184 mathrm{~J} cdot mathrm{g}^{-1} cdot{ }^{circ} mathrm{C}^{-1} ).
The heat capacity of the calorimeter was determined in a previous experiment to be ( 949.4 mathrm{~J} cdot{ }^{circ} mathrm{C}^{-1} ).
Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of pyrene based on these data.
[
mathrm{C}_{16} mathrm{H}_{10}(s)+(37 / 2) mathrm{O}_{2}(g) 
ightarrow 5 mathrm{H}_{2} mathrm{O}(l)+16 mathrm{CO}_{2}(g)+	ext { Energy }
]
Molar Heat of Combustion ( = ) ( mathrm{kJ} / mathrm{mol} )
Submit Answer

Combustion (bomb) calorimeter.
In an experiment, a ( 0.4840 mathrm g ) sample of pyrene ( left(mathrmC16 mathrmH10
ight) ) is burned completely in a bomb calorimeter. The calorimeter is surrounded by ( 1.170 imes 10^3 mathrm g ) of water. During the combustion the temperature increases from 23.76 to ( 26.87^circ mathrmC ). The heat capacity of water is ( 4.184 mathrm J cdot mathrmg^-1 cdot ^circ mathrmC^-1 ).
The heat capacity of the calorimeter was determined in a previous experiment to be ( 949.4 mathrm J cdot ^circ mathrmC^-1 ).
Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of pyrene based on these data.
[
mathrmC16 mathrmH10(s)+(37 / 2) mathrmO2(g)
ightarrow 5 mathrmH2 mathrmO(l)+16 mathrmCO2(g)+ ext Energy
]
Molar Heat of Combustion ( = ) ( mathrmkJ / mathrmmol )
Submit Answer

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