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Is nitrogen an elementary substance or a compound
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What layer of the atmosphere is directly above the troposphere?
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Compare and contrast physical changes with chemical changes.
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Which diagram shows the correct way to represent an ionic compound of magnesium oxide?
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Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
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Is nitrogen an elementary substance or a compound...
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