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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
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4 votes
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

User Uclajatt
by
8.2k points

2 Answers

4 votes

Answer:

It's B!

Step-by-step explanation:

User Guido Van Rossum
by
8.3k points
6 votes
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.
User Rez Moss
by
7.6k points
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