So do I use the same equation but instead of -715 the positive value 715?
So.. multiply 715 by the moles of methanol then divide by the 8.4k temp rise? to get 2.2kJ/K?
Homework Statement
A bomb calorimeter is used to measure the overall heat output. It is calibrated by burning 1.00g of methanol (Change in enthalpy of combustion- 715 kJ mol–1) in O2 which produces a temperature rise of 8.40 K. Use this information to determine the heat capacity of the...
So now I just multiply it by the 1.4K? to get the amount of heat released as I had it in J/K. So as it was in Joules per kelvin, if i times by 1.4 Kelvin, the heat will adjust, so I will know how much?
But the question was only asking for the heat capacity of the calorimeter? not how much heat...
The amount of heat needed to raise the temperature of an object or substance by 1 degree.. So I don't need to multiply by 1.4k at the end?
Just 500W x 100s/5k= Heat capacity of Calorimeter? so 10 kJ?
Sorry its been a long day haha.
The units of W is one Joule per second?, so If i multiply the 500W by the 100s. I get 50000 J?
Do I then divide this by the 5K? Finally multiply by the 1.4k? to get the final answer at 14Kj?
Need a little help, as I seem to have gotten confused.
Looking over past exam questions for the heat capacity of a calorimeter, this one is the one I am looking at :
A sample of the sugar fructose (C6H12O6) of mass 0.900 gwas placed in a calorimeter and
ignited inthe presence of excess oxygen...