the calorimeter rises from 20.02 degrees C to 25.36 degree C. Calculate the heat of combustion reaction (qrxn) in KJ
2007-04-15 06:58:54 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
This is a one step calculation. Calculate the heat gained by the calorimeter.
q = m Cp delta T
q = heat in J
m = grams of the substance in the calorimeter (you need this)
Cp = 4.62J / g oC
delta T = Tf - Ti 25.36-20.02
Plug in the numbers and solve for q. If you want KJ, divide the answer by 1,000
2007-04-15 07:07:46 · answer #1 · answered by reb1240 7 · 0⤊ 0⤋
First calculate the temperature change in the calorimeter, which is 5.34°C. Multiply that by the mass of the calorimeter (which you did not supply) and the heat capacity; that will tell you the total heat added. Then divide that by 1000 to convert joules into kilojoules.
2007-04-15 07:04:57 · answer #2 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
the two solutions are incorrect you may think of of the reaction, calculations are the two appropriate yet they're additionally adverse. outstanding solutions -25.5 Kg/J warmth combustion in line with gram of quinone ( combustion is often adverse because of the fact is exothermic reaction. warmth combustion in line with mole -2750 kJ/mol
2016-11-24 20:25:34 · answer #3 · answered by Anonymous · 0⤊ 0⤋