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A sample of ore containing manganese weighed 1.2354 grams. This sample was heated in a solution of nitric acid, which dissolved the manganese producing manganese (III) nitrate [Mn(NO3)3]. The acidity of the solution was adjusted, and hydrogen sulfide gas was bubbled into the solution producing 0.2876 grams of manganese (II) sulfide [Mn2S3]. What is the percentage of manganese in the original sample? O 5.45% O 6.8% O 11.65% 12.41%

A sample of ore containing manganese weighed 1.2354 grams. This sample was heated in a solution of nitric acid, which dissolved the manganese producing manganese (III) nitrate [Mn(NO3)3]. The acidity of the solution was adjusted, and hydrogen sulfide gas was bubbled into the solution producing 0.2876 grams of manganese (II) sulfide [Mn2S3]. What is the percentage of manganese in the original sample? O 5.45% O 6.8% O 11.65% 12.41%

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A sample of ore containing manganese weighed 1.2354 grams. This sample was heated in a solution of nitric acid, which dissolved the manganese producing manganese (III) nitrate [Mn(NO3)3]. The acidity of the solution was adjusted, and hydrogen sulfide gas was bubbled into the solution producing 0.2876 grams of manganese (II) sulfide [Mn2S3]. What is the percentage of manganese in the original sample? O 5.45% O 6.8% O 11.65% 12.41%
Transcribed Image Text:A sample of ore containing manganese weighed 1.2354 grams. This sample was heated in a solution of nitric acid, which dissolved the manganese producing manganese (III) nitrate [Mn(NO3)3]. The acidity of the solution was adjusted, and hydrogen sulfide gas was bubbled into the solution producing 0.2876 grams of manganese (II) sulfide [Mn2S3]. What is the percentage of manganese in the original sample? O 5.45% O 6.8% O 11.65% 12.41%
A fertilizer sample contains 9.11 %P2O5 and 11.03% H2O. Calculate the %P2O5 on a dry basis? 0.1% O 12.1% O 10.2% O 9.2%
Transcribed Image Text:A fertilizer sample contains 9.11 %P2O5 and 11.03% H2O. Calculate the %P2O5 on a dry basis? 0.1% O 12.1% O 10.2% O 9.2%
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