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15 cards from this deck
Energy released when 1 mole burns completely in oxygen
Technique to measure heat transfer via temp changes in water
Excellent heat conductor, ensures efficient heat transfer
Prevents air currents interfering with flame, improves accuracy
Exothermic (energy released to surroundings)
m×c×ΔTm \times c \times \Delta Tm×c×ΔT
420042004200 J kg−1^{-1}−1 K−1^{-1}−1 (or 4.24.24.2 kJ kg−1^{-1}−1 K−1^{-1}−1)
Heat needed to raise 1 kg of substance by 1 K
The water (gently, to ensure even heat distribution)
Longer molecules release more energy (more bonds to break)
All heat from burning alcohol goes into heating the water
Heat loss to surroundings
Heat losses, incomplete combustion, apparatus absorption
Weigh spirit burner before and after, find difference
Approximately 650650650 kJ/mol more energy release
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