What roll does the iron (III) chloride play in the chemical reaction, when 50.0 mL of 0.100M iron (III) chloride is mixed with 50.0 mL of 0.100M lead (II) nitrate?
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Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium