The mineral that is the hardest known substance in nature is a diamond.
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Explanation:
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Answer:
the third one
Explanation:
if you look at it mathematically its the one that makes the most sense
Answer:
Carbonic acid a type of weak acid formed from the dissolving of carbon dioxide in water.
Explanation:
The chemical formula of carbonic acid is H2CO3. Its structure consists of a carboxyl group with two hydroxyl groups connected. As a weak acid, it partially ionizes, dissociates or rather, breaks apart, in a solution.
The basic substances are called elements
