Consider the chemical equilibrium: N. OR$ 2 NO218)
If the concentration of N, O, is doubled and the reaction is allowed to
reach equilibrium, then at equilibrium:
a) Ke would become twice of its original value.
b) Ke would become half of its original value.
c) K, would double and K, would remain unchanged.
d) K-K
e) K, would not change its original value.

Sorry i dont understand the question can you rephase it?

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

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.