Question

what is water made of... ​

Answer 1

Answer:

2 hydrogen molecules and an oxygen molecule (h2o)

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Answer 2

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$Ｂiologically$

• Water can formed biologically during metabolic reactions through the action of enzymes on various compounds.

• Combustion, burning hydrogen in oxygen.

• Catalytically combining oxygen and hydrogen to provide a power source in non polluting fuel cells that produce only water as the waste product.

$Ｃhemically$

A water molecule has three atoms:

• two hydrogen (H) atoms
• and one oxygen (O) atom.

That's why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.

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