The Tl in a 9.57 g sample of rodenticide was oxidized to the trivalent state and treated with an unmeasured excess of Mg/EDTA solution. The reaction is T13+ + MgY2- = TIY- + Mg2+ Titration of the liberated Mg2+ required 12.5 mL of 0.03610 M EDTA. Calculate the percent T12S04 (504.8 g/mol) in the sample. Calculate conditional constant KMY’ for the formation of the EDTA complex of Fe2 at a pH of 9.0. The dissociation constants of EDTA are K1 = 1.02 x 10-2 K2 = 2.14 x 10-3 K3 = 6.92 x 10-7 K4 = 5.50 x 10-11 The formation constant for Fe2+ and EDTA complex is KMY = 2.10 x 1014

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

Which of the following electromagnetic waves can create ions?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)