2. If the ammonia solution of Na were not completely converted to NaNH2, how would this...

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2. If the ammonia solution of Na were not completely converted to NaNH2, how would this affect the subsequent preparation of [Cr(NH3)6](NO3)3?

3. If a large excess of Fe(NO3)39H2O were added to the NH3 solution of Na, how would this affect the yield of [Cr(NH3)6](NO3)3 and why?

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