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Which of the following compounds contains a double bond? a - nh3 b - co2 c - n2 d - ci2
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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true
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Which of the following compounds contains a double bond? a - nh3 b - co2 c - n2 d - ci2...
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