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Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes or no?