When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining at1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,0,-, in which the oxygenstoichiometry varies between 7 and 6.5 (x = 0 to 0.5).%3D1000°CYBa, Cu, O, (s) + (3.5 – x)H,(g)FM 666. 19-16.00x-Y,0,(s) + 2 BaO(s) + 3 Cu(s)+(3.5 – x)H,O(g)YBa, Cu,OssThermogravimetric analysis. When 37.329 mg of YBa, Cu, O, , were subjected to this analysis, 34.435 mg offsolidremained after heating to 1000°C. Find the value of x in YBa, Cu,O, -Propagation of error. Suppose that the uncertainty in each mass is +0.002 mg. Find the uncertainty in the value of x.

When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining an 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,O, - in which the oxygen stoichiometry varies between 7 and 6.5 (x = 0 to 0.5). %3D 1000°C 1 YBa, Cu, O, (s) + (3.5 – x)H,(g) - -Y,0,(s) + 2 BaO(s) + 3 Cu(s) +(3.5 – x)H,O(g) FM-666. 19-16.00x YBa, Cu,Os Thermogravimetric analysis. When 37.329 mg of YBa, Cu,O, -, were subjected to this analysis, 34,435 mg offsolid emained after heating to 1000°C. Find the value of x in YBa,Cu,O, --

When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining an 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,O, - in which the oxygen stoichiometry varies between 7 and 6.5 (x = 0 to 0.5). %3D 1000°C 1 YBa, Cu, O, (s) + (3.5 – x)H,(g) - -Y,0,(s) + 2 BaO(s) + 3 Cu(s) +(3.5 – x)H,O(g) FM-666. 19-16.00x YBa, Cu,Os Thermogravimetric analysis. When 37.329 mg of YBa, Cu,O, -, were subjected to this analysis, 34,435 mg offsolid emained after heating to 1000°C. Find the value of x in YBa,Cu,O, --

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining at
1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,0,-, in which the oxygen
stoichiometry varies between 7 and 6.5 (x = 0 to 0.5).
%3D
1000°C
YBa, Cu, O, (s) + (3.5 – x)H,(g)
FM 666. 19-16.00x
-Y,0,(s) + 2 BaO(s) + 3 Cu(s)+(3.5 – x)H,O(g)
YBa, Cu,Oss
Thermogravimetric analysis. When 37.329 mg of YBa, Cu, O, , were subjected to this analysis, 34.435 mg offsolid
remained after heating to 1000°C. Find the value of x in YBa, Cu,O, -
Propagation of error. Suppose that the uncertainty in each mass is +0.002 mg. Find the uncertainty in the value of x.

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