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# combustion of alcohol watch

1. I need help understanding some concepts

Say you carry out a experiment for the combustion of alcohol using 300 cm3 of water and 4.50g of alcohol in order work out q=mc∆t. Say this is your standard experiment

And you do variations to this experiment

using smaller volume of water
Why is it that mc∆t is the same, if you use asmaller amount of water?

Using larger mass of alcohol
Why is mc∆t the same if you burn a larger mass of alcohol?

Burning alcohol for longer period of time
Why is mc∆t the same when you burn the alcohol for a longer period of time?
2. (Original post by chuckynoriss)
I need help understanding some concepts

Say you carry out a experiment for the combustion of alcohol using 300 cm3 of water and 4.50g of alcohol in order work out q=mc∆t. Say this is your standard experiment

And you do variations to this experiment

using smaller volume of water
Why is it that mc∆t is the same, if you use asmaller amount of water?

Using larger mass of alcohol
Why is mc∆t the same if you burn a larger mass of alcohol?

Burning alcohol for longer period of time
Why is mc∆t the same when you burn the alcohol for a longer period of time?
The energy released as heat by the breaking of bonds is constant.

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