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How does the presence of Zn2+ affect the Cu2+ retention by soil?
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- The grid has six lettered boxes, each of which contains an item that may be used to answer the questions that follow. Items may be used more than once and there may be more than one correct item in response to a question. Place the letter(s) of the correct selection(s) on the appropriate line. Could dissolve Zn(OH)2 _____________ Could be used to prepare a buffer from __________ Halfway to the equivalence point in the titration of a weak, monoprotic acid with strong base ________ SO2-related atmospheric phenomenon __________ Species formed by a Lewis acid-base reaction ________ General condition required for precipitation to occur ________ [conj. base] = [conj. acid] in a buffer ___________What will happen if Ca(CH3COO)2 is dissolved in H2O?A sample of impure NaOH, which has been partially converted to Na2CO3 by exposure to CO2, is analyzed by titrating a 188.5 mg sample with 0.1065 M HCl. The volume required to reach phenolphtalein end point is 39.19 ml while the volume required to reach bromocresol green end point is 40.67 ml. Calculate the percentages of NaOH (MWt= 40 g/mole) and Na2CO3 (MWt=83 g/mole) in the sample.
- What is the concentration of the FeSCN2+ in the stock solution?The pH of normal urine is 6.30, and the total phosphate concentration ([PO43−] + [HPO4 2−] + [H2 PO4 −] + [H3PO4]) is 0.020 M. What is the minimum concentration of Ca2+ necessary to induce kidney stone formation?What causes cadmium ion(Cd2+) to precitipate at pH 9 solutions
- What type of reation is; 2 Al + 3 FeCl2 ® 2 Fe + 2 AlCl3? 1) Double replacement 2) Simple decomposition. 3) Simple formation 4) Single replacementThe tetraethyl lead [Pb(C2H5)4] in a 25.00 mL sample of aviation gasoline was shaken with 15.00 mL of 0.02158 M I2. (Hint: one mole of I2 reacts with one mole of the tetraethyl lead). After the reaction was complete, the unused I2 was titrated with 4.86 mL of 0.02944 M thiosulfate solution. Calculate the weight in milligrams of [Pb(C2H5)4] (MW = 323.4 g/mol) in each liter of gasoline. Assign an oxidation number to the element specified in the compound or ion below: N:N2O2 N:NH4+This is a question about balancing oxidation reduction reactions for CHM-152