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OpenStudy (kitten_is_back):
How did early chemists determine which substances were elements? A. by observing chemical reactions B. by finding the atomic mass C. by counting neutrons D. by counting protons
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OpenStudy (kitten_is_back):
@Destinyyyy
OpenStudy (kitten_is_back):
@Keigh2015
OpenStudy (keigh2015):
I would say either b, c, or d
OpenStudy (kitten_is_back):
i will go with c
OpenStudy (keigh2015):
Ok
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