A sample containing Al2O3 and Na2Cr2O7.2H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100oC for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.
A sample containing Al2O3 and Na2Cr2O7.2H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100oC for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter19: The Chemistry Of The Main-group Elements
Section: Chapter Questions
Problem 77QRT
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A sample containing Al2O3 and Na2Cr2O7.2H2O was brought into the laboratory for analysis. The analyst heated a 2.2846 gram sample of this material to 100oC for one hour, at which time only Al2O3 and Na2Cr2O7 remained. This mixture was found to weigh 2.2312 grams. Calculate the percent chromium in the sample.
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