Asked by Nathan

A mixture of hydrogen gas and oxygen gas are ignited and the following reaction occurs: Hydrogen + Oxygen = Water + Energy. Is this an Endothermic or Exothermic reaction and why?
Answered by bobpursley
If it burns, doesn't it give off heat?
Answered by Nathan
I'm not sure it burns. that's my problem. I would assume it burns because it is being ignited. But the question that will be on the test tomorrow is "2 students ignight a mizture of hydrogen gas and oxygen gas in a test tube. The following reaction occurs: Hydrogen + Oxygen = Water + Energy. Is the reaction that occurs endo or exothermic and why?"
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