Chemistry, 29.03.2021 16:40, joceeeeelyn2899
To the unknown mixture, 3 drops of 6 M HCl was added and a precipitate formed. The mixture was centrifuged to isolate the precipitate and the liquid was kept for further testing. To the liquid, 3 drops of 0.10M (NH4)2SO4 was added and a precipitate formed. The precipitate was centrifuged and liquid was further tested by making it basic and adding a few drops of (NH4)2C2O4. But no precipitate formed. To the liquid that was left, a Mg2 test was done but no blue jelly-like precipitate formed. To the precipitate that formed from the addition of HCl (first step stated above), DI water was added and the precipitate was heated in a water bath for 5 minutes. After which, the precipitate dissolved completely. To the liquid that remained a few drops of K2CrO4 was added and a yellow precipitate formed. To the unknown, a flame test was performed and the color emitted was a light purple-red. What ions are in the unknown
Answers: 1
Chemistry, 21.06.2019 16:30, monnicawilliam
Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming
Answers: 2
Chemistry, 21.06.2019 18:30, jadepotts3965
Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)
Answers: 2
Chemistry, 22.06.2019 09:40, kolibeilfuss
Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.
Answers: 3
To the unknown mixture, 3 drops of 6 M HCl was added and a precipitate formed. The mixture was centr...
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