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Is air an element, compound, homogeneous mixture, or a heterogeneous mixture?
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An observation that requires measurement is called quantitative observable or qualitative
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Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .
Answers: 2
Is air an element, compound, homogeneous mixture, or a heterogeneous mixture?...
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