Cadmium (Cd) is reported to be much more toxic as the free metal (Cd^2+) than when complexed with ligands. The total soluble Cd concentration (Cgamma, Cd = [Cd^2+] 4- the sum of all soluble Cd complexes) in a water is measured to be 10^-4M. In order to ensure that the toxicity of Cd is small, it is desirable to have Cd^2+ be less than 10^-7 M. An environmental engineer suggests adding 0.5 M NaCl to complex the Cd^2+. Ignore activity corrections and the formation of any solids. Consider only the complexes of chloride with cadmium-there are 4 (log beta1 = 2.0, log beta2 = 2.6, log beta3 = 2.4, and log beta4 = 1.7).
A. Will this help keep [Cd^2+] below 10^-7 M?
B. What is [Cd^2+]?
Answers: 2
Chemistry, 21.06.2019 18:30
Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
Answers: 1
Chemistry, 22.06.2019 05:50
What are the 4 phases of matter in order of increasing engery content?
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 16:10
Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)
Answers: 2
Cadmium (Cd) is reported to be much more toxic as the free metal (Cd^2+) than when complexed with li...
Biology, 17.12.2021 04:30
Chemistry, 17.12.2021 04:30
Mathematics, 17.12.2021 04:30
Social Studies, 17.12.2021 04:30
Computers and Technology, 17.12.2021 04:30
English, 17.12.2021 04:30