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Two Hydrogen atoms covalently bonded to one Oxygen atom. One of the more common compounds on the surface of the earth.

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the form of a kettle

What is the best form for a kettle, that is, to have the water boil the fastest? … I am particularly interested in the following case: for one given kettle (whose volume is constant) containing different volumes of water. I do not like to wait for my coffee in the morning. …
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