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20 September, 23:31

Magnesium carbonate, MgCO3, reacts with nitric acid, HNO3, to form magnesium nitrate and carbonic acid. Carbonic acid reacts to form water and carbon dioxide. Which type of reaction does carbonic acid undergo?

A. synthesis; carbonic acid forms from two smaller compounds

B. synthesis; carbonic acid forms from the elements

C. decomposition; carbonic acid breaks down into two simpler compounds

D. decomposition; carbonic acid breaks down into its elements

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  1. 20 September, 23:49
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    I believe the anser is C ...
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