Harris LUCY When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H, the solid remaining at 1000C is a mixture of Y,Os, 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). 1000C FM 666.19-16.00 YBa, Cu, 07--() + (3.5 - x)H,(8) Y,O,(8) + 2 BaOs) + 3 Cu(s)+(3.5 - x)H2O(g) Y, ,0 Thermogravimetric analysis. When 37.593 mg of YBa, Cu, 0, -, were subjected to this analysis, 34.638 mg of solid remained after heating to 1000. Find the value of x in YBa, Cu, 0, -** X Propagation of error. Suppose that the uncertainty in each mass is +0.002 mg. Find the uncertainty in the value of x