If a substance is not able to be separated by physical means but is able to be separated by chemical means, it is a (n)

Solution

Heterogenous mixture

Element

Compund

A molcule is the smallest part of

a 5 gram sample of zinc is added to hydrochloric acid. The amount of hydrochloric acid is sufficient to allow the zinc to react cmpletely. what mass of hydrogen gas does this reaction produce?

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Why are 3 ammonium groups needed for every 1 nitride ion?

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