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which element has an atomic number of 6 and a mass number of 15 (6 protons, 9 neutrons in the nucleus and 6 electrons in its orbitals)
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Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat
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What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
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which element has an atomic number of 6 and a mass number of 15 (6 protons, 9 neutrons in the nucleu...
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