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A sample containing a mixture of SrCl2·6H2O (MW = 266.62 g/mol) and CsCl (MW = 168.36...

A sample containing a mixture of SrCl2·6H2O (MW = 266.62 g/mol) and CsCl (MW = 168.36 g/mol) originally weighs 1.9715 g. Upon heating the sample to 320 °C, the waters of hydration are driven off SrCl2·6H2O, leaving the anhydrous SrCl2. After cooling the sample in a desiccator, it has a mass of 1.6811 g. Calculate the weight percent of Sr, Cs, and Cl in the original sample.

1) wt% Sr

2) wt% Cs

3) wt% Cl

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Answer #1

co stall ation loss in ms8 on hah 1.97159- 1.2904 9 Dehydrahon auachon: finding volk)s ol 0.2904 O.o1G119G1 mo o 0.0161196 )為01 H20 = 0.0026866 mol Sdth0 6mol H20 266-619 9 siclg6#omol 0.0026666 mol S3c2 6H20 x : 0.71629513 sul26H2O (1.97 159 total)-(0.1162951 ยิ Sch.6H2O) : 1.2552048 cscl I mol Sr 0.0026866 mo STdl2620 x g nol-0.235399 gsr 1 mol Cs X 132. 4059 CS[mol - 0.9908789 9 CS 4159 »la)- Co.olélisj#b) - (0.2853999sT)- (0.105711gc%) 1.9715 0.729102 cl

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