Chemistry, 18.10.2021 21:40 ashleymunoz928
A solution containing a mixture of metal cations was treated with dilute HCl and a precipitate formed. The solution was filtered, and H2S was bubbled through the acidic solution. A precipitate again formed and was filtered off. Then, the pH was raised to about 8 and H2S was again bubbled through the solution. This time, no precipitate formed. Finally, the solution was treated with a sodium carbonate solution, which resulted in the formation of a precipitate. Classify the metal ions based on whether they were definitely present, definitely absent, or whether it was possible they were present in the original mixture.
1. Cu2+
2. Sb3+
3. Pb2+
4. Ca2+
5. Hg2^2+
6. Fe2+
7. Al3+
8. Sn2+
9. Li2+
10. Mg2+
11. Hg2+
12. Ag+
a. definitely present
b. definitely absent
c. possibly present
Answers: 3
Chemistry, 21.06.2019 15:00
If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.
Answers: 1
Chemistry, 21.06.2019 21:30
Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water
Answers: 1
Chemistry, 21.06.2019 21:30
How air particles exert a pressure on the inside of the balloon
Answers: 1
Chemistry, 22.06.2019 00:30
This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?
Answers: 1
A solution containing a mixture of metal cations was treated with dilute HCl and a precipitate forme...
English, 30.01.2020 12:00
Spanish, 30.01.2020 12:01
Mathematics, 30.01.2020 12:01
Geography, 30.01.2020 12:01
History, 30.01.2020 12:01
Mathematics, 30.01.2020 12:01
Mathematics, 30.01.2020 12:01
Arts, 30.01.2020 12:01
History, 30.01.2020 12:01