Determine the value of the equilibrium constant (report
youranswer to three significant figures) for the following reaction
ifan equilibrium mixture contains 0.010 mol of solid
pbi2,and is 0.0100 m in pb2+ ions and 0.00081
m ini1- ions. use the notation 4.31e-5 to indicate a
numbersuch as 4.31 x 10-5.

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f. 

Alfred wegener was a scientist who proposed the continental drift theory in the early twentieth century .simply put , his hypothesis propose that the continents had once been joined and overtime have drifted a part .