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Unformatted text preview: magnesium nitrate reacted with ammonium hydroxide to form a rusty yellow, cloudy precipitate and sodium hydroxide to form a brownish yellow semi-solid precipitate; and aluminum nitrate reacted with ammonium hydroxide to form a bluish-white misty precipitate and sodium hydroxide to form a whitish cloudy precipitate, however adding more sodium hydroxide made the precipitate disappear. One possible reason why I did not receive a perfect score on the unknown was because we dripped the solution into the test tube too quickly, and a precipitate could have formed and disappeared within that time. Another, though unlikely, was because we mixed up the order of the solutions....
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- Spring '11