Asolution contains some or all of the ions cu2+, al3+, k+, ca2+, ba2+, pb2+, and nh4+. the following tests were performed, in order, on the solution. addition of 6 m hcl produced no reaction. addition of h2s with 0.2 m hcl produced a black solid. addition of (nh4)2s produced a white solid. addition of (nh4)2hpo4 in nh3 produced no reaction. the final supernatant when heated produced a purple flame. identify which of these ions were present in the solution, which were absent, and for which ones no conclusions can be drawn.
Answers: 1
Chemistry, 22.06.2019 07:00
In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
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If there are 3.5 moles of koh, how many moles of naoh can be produced? question 1 options: a)3.0 moles naoh b)3.5 moles naoh c)1 moles naoh d)9 moles naoh
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Chemistry, 23.06.2019 03:10
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Asolution contains some or all of the ions cu2+, al3+, k+, ca2+, ba2+, pb2+, and nh4+. the following...
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