Chemistry, 02.07.2021 15:50 Tnguyen8160
A sample of radon-222 has a half life of 3.82days. After 11.46 days, there is 5 grams of radon-222 remaining. How much radon 222 was in the original sample
Answers: 3
Chemistry, 21.06.2019 15:30
Which of the following mining methods disrupts the sea floor?
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Chemistry, 22.06.2019 00:30
Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.
Answers: 2
Chemistry, 22.06.2019 00:30
13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.
Answers: 3
Chemistry, 22.06.2019 01:00
Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center
Answers: 2
A sample of radon-222 has a half life of 3.82days. After 11.46 days, there is 5 grams of radon-222 r...
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