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Vlad [161]
3 years ago
6

What else supports the idea that an exothermic reaction has occurred?

Chemistry
1 answer:
kodGreya [7K]3 years ago
4 0
The main pieces of evidence that an exothermic reaction has occurred is an increase in temperature due to the release of energy, a release of energy in the form of light, or a release of gas.
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For sample B, we are told that boiling started at 66.2°C and continued until 76.0°C. The implication of this is that B must be a mixture since it boils over a range of temperatures. Pure substances have a sharp boiling point.

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