When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H2,H2, the solid remaining at 1000°C1000°C is a mixture of Y2O3,Y2O3, BaO, BaO, and Cu. Cu. The starting material has the formula YBa2Cu3O7−x, YBa2Cu3O7−x, in which the oxygen stoichiometry varies between 7 and 6.5 (x=0(x=0 to 0.5). YBa2Cu3O7−x(s)FM=666.19−16.00x+(3.5 −x)H2(g)−→−−−1000°C12Y2O3(s)+2BaO(s )+3Cu(s)+YBa2C u3O3.5(3.5−x)H2O(g) YBa2Cu3O7−x(s)FM=666.19−16.00x+(3.5 −x)H2(g)→1000°C12Y2O3(s)+2BaO(s)+3C u(s)⏟+YBa2Cu3O3.5(3.5−x)H2O(g) Thermogravimetric analysis. When 33.574 mg33.574 mg of YBa2Cu3O7−xYBa2Cu3O7−x were subjected to this analysis, 30.956 mg30.956 mg of solid remained after heating to 1000°C.1000°C. Find the value of xx in YBa2Cu3O7−x. YBa2Cu3O7−x. x=x= Propagation of error. Suppose that the uncertainty in each mass is ±0.002 mg.±0.002 mg. Find the uncertainty in the value of x. x. x ±x ±