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Describe some tests that could be done to determine what an unknown substance is.

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Answer:

Simple chemical tests can be used to identify the presence of various elements or classes of molecules (Tollen's test). ... Electron spin resonance (ESR): Also referred to as electron paramagnetic resonance (EPR), this method uses the spins of unpaired electrons in molecules to determine structure

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User LightMikeE
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Answer:

by finding melting and boiling points

Step-by-step explanation:

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User Michael Campsall
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