please answer asap Sample6Fe +2Cr'The excess K,Cr,O, was back-titrated with 8.53 mLof 0.00949 M Fe2 solution. Calculate the concentra-tion of iron in the sample in parts per million.2413-22. The arsenic in a 1.203-g sample of a pesticidewas converted to H3ASO4 by suitable treatment.The acid was then neutralized, and 40.00 mL of0.05871 M AgNO, was added to precipitate the ar-senic quantitatively as Ag3AsO4. The excess Ag* inthe filtrate and in the washings from the precipitatewas titrated with 9.63 mL of 0.1000 M KSCN, andthe reaction was(a) Calcin th(b) Cale(c) Calemea(d) Atsult*13-27. (a) A CNa-Ag* + SCN ABSCN(s)witpercentage of As,O3 in the sample.*13-23. The thiourea in a 1.455-g sample of organic mate-rial was extracted into a dilute H,SO, solution andtitrated wich 37.31 ml. of 0.009372 M Ho+Find the0O MI NOTE 10 LITECO AI QUAD CAMERA

The balanced chemical reaction indicates the number of atoms of reactants becomes equal to the…

13-22. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag,AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN AGSCN(s) Find the percentage of As,O3 in the sample.

13-22. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag,AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN AGSCN(s) Find the percentage of As,O3 in the sample.

Chemistry

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Chapter1: Chemical Foundations

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Question

please answer asap

Sample
6Fe +2Cr'
The excess K,Cr,O, was back-titrated with 8.53 mL
of 0.00949 M Fe2 solution. Calculate the concentra-
tion of iron in the sample in parts per million.
2
4
13-22. The arsenic in a 1.203-g sample of a pesticide
was converted to H3ASO4 by suitable treatment.
The acid was then neutralized, and 40.00 mL of
0.05871 M AgNO, was added to precipitate the ar-
senic quantitatively as Ag3AsO4. The excess Ag* in
the filtrate and in the washings from the precipitate
was titrated with 9.63 mL of 0.1000 M KSCN, and
the reaction was
(a) Calc
in th
(b) Cale
(c) Cale
mea
(d) At
sult
*13-27. (a) A C
Na-
Ag* + SCN ABSCN(s)
wit
percentage of As,O3 in the sample.
*13-23. The thiourea in a 1.455-g sample of organic mate-
rial was extracted into a dilute H,SO, solution and
titrated wich 37.31 ml. of 0.009372 M Ho+
Find the
0O MI NOTE 10 LITE
CO AI QUAD CAMERA

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