A 2.75 g sample of the hydrocarbon acetone, CH3COCH3, is burned in a bomb calorimeter with 975 mL of water, initially at 23.50 degrees celsius. The bomb is constructed of 285.0 g of nickel metal having a specific heat capacity of Cp = 0.826 J/ g degrees C. The final temperature of the bomb and the water after the combustion process increases to 29.55 degrees celsius. calculate the following:
(a)The heat flow at constant volume, qv for this combustion (in kJ/mol).
i know qv = delta E. and that delta E = q + w. but how do i find the work? i know work = force / distance. (i'm sorry if i sound incompetant but i'm struggling because my book gives and example where the work is already given so its not helpful at all.)
(b)The energy released per mole of acetone (in kj/mole).
(c)calculation (b) amounts to the heat of combustion per mole, delta h comb/mole for this compound. Balance the reaction for the complete combustion of acetone, find delta n and then find the value of delta H per mole of acetone (kJ/mole).
i don't know how to even start part (b).
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