SPIDERLEAP SPIDERLEAP

02-03-2018
Chemistry

contestada

Which of these is a combustion and synthesis reaction?

A. CH4 + 2 O2 → CO2 + 2 H2O

B. Mg + O2 → MgO

C. H2O → H2 + O2

D. CaO → Ca + O2

Respuesta :

mcknightashlyn mcknightashlyn

02-03-2018

A is the correct answer. A combustion reaction creates carbon dioxide and water. A is the only answer choice were carbon dioxide and water are made.

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wdavidson120 wdavidson120

23-07-2019

Answer:

It's B!

Explanation:

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