What is the amount of heat released by the fuse wire during combustion? Is it reasonable to ignore this heat in experimental procedures?
The heat released from the combustion of the fuse wire is calculated by multiplying the heat release value (1400 cal/g) by the mass of the wire (~0.02 g), which gives 28 cal. Whether it is reasonable to ignore this heat in experimental procedures depends on the heats released by other substances like pallets, qacid, and qsucrose, as well as the required precision of measurements.
Calculating Heat Released by the Fuse Wire
Heat released from fuse wire combustion: 1400 cal/g
Mass of 10 cm of fuse wire: ~0.02 g
To estimate the amount of heat released by the fuse wire during combustion, we can multiply the given heat release value by the mass of the wire:
1400 cal/g * 0.02 g = 28 cal
This means that when a 10 cm piece of fuse wire burns, it produces a total of 28 calories of heat. Now, the question arises whether it is reasonable to ignore this heat in experimental procedures.
Comparing Heat with Other Substances
The reasonableness of ignoring the heat released by the fuse wire depends on the heat released by other substances such as pallets, qacid, and qsucrose. If the heats released by these substances are significantly larger than 28 cal, then it might be reasonable to disregard the heat from the fuse wire. This is because the contribution of the fuse wire's heat to the overall heat will be minimal in comparison.
Additionally, the decision to ignore the heat released by the fuse wire also depends on the required precision of the measurements. If the experiment demands high precision and accuracy, even small amounts of heat like 28 cal should be taken into consideration.
In conclusion, the estimation of heat released by the fuse wire allows us to understand its contribution to the overall heat in combustion. Whether to ignore this heat or not in experimental procedures depends on the comparison with other substances and the level of precision required for the measurements.