Carbon dioxide (CO2) reacts with water (H2O) to form carbonic acid (H2CO3).

Which equation demonstrates the law of conservation of matter for this reaction?
A. 2 CO + H2O —> H2CO3
B. CO2 + H2O —> H2CO3
C. CO2 + 2 H2O —> 2 H2CO3
D. 2 CO2 + 2 H2O —> 4 H2CO3

is it B?

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  1. Yes, B is correct.

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