When an excess of sodium sulfide was added to 125mL of 0.100mol/L iron 2 nitrate, a black precipitate formed. Identify the percipitate, and calculate the maximum mass of precipitate that can be collected from the reaction.

When an excess of sodium sulfide was added to 125mL of 0.100mol/L iron 2 nitrate, a black precipitate formed. Identify the percipitate, and calculate the maximum mass of precipitate that can be collected from the reaction.

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