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3 votes
Which of the following is a decomposition reaction?

A. 2Mg+O2 -> 2MgO
B. CH4+2O2 -> CO2+H2
C. 2H2O + 2Na -> 2NaOH+H2
D. CaCO3 ->CaO+CO2

User Sid Ali
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2 Answers

2 votes

the answer is A. for plato people

User Flpe
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4 votes
your best choice seems to be D) 
User Rob Quincey
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