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Chemistry, 23.08.2020 02:01 help977

explain that substances which have covalent bonding can be elements (e. g. H2, O2, N2, C) or compounds (e. g. CH4, CO2, SiO2).

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explain that substances which have covalent bonding can be elements (e. g. H2, O2, N2, C) or compoun...
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