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klasskru [66]
3 years ago
15

what is always true of a combustion reaction? oxygen gas must be one of the reactants carbon monoxide will be produced the react

ion absorbs energy one reactant must contain chlorine
Chemistry
1 answer:
cestrela7 [59]3 years ago
6 0
The correct answer should be
<span>carbon monoxide will be produced

Combustions release heat, they don't absorb it. Oxygen is not necessary as other gasses can also do it, while chlorine is not necessary.</span>
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