What are the atoms present in #"iron(II) sulfide"#, #"sulfur trioxide"#, and #"magnesium nitrate"#?

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Answer 1 · 2015-12-06T08:47:02

You tell us! You have #FeS# (it could be #Fe_2S_3# but this is irrelevant to your question), and #SO_3#, and #Mg(NO_3)_2,# and ammonia.