Recent content by Armitage12

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...

You were a massive help, really appreciate it!

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...

I would of assumed J/K?

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.

Or do I need not multiply by the 1.4k. Is it simply 500w x 100s/ 5k= 10,000J/1000= 10kJ??

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...