Informatio X
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S 04.02 Che...
Informatio X
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S 04.02 Chemical Change Sch X
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Question 9 (2 points)
(04.02 MC)
What is the main difference between a chemical and a physical change? Use examples to support your answer. (2 points)
Answers: 3
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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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Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
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