What do the symbols tell you about the conditions
of the reactions shown to the right? Check all of
the boxes that apply.
3H, (g) +N (9) 450°C 2NH, (g)
(2) 250, (g) + O2(g) Os 250, (g)
The products and reactants of both reactions
are gases.
Reaction 1 occurs at high pressure.
Reaction 2 makes a small amount of an
additional product.
A catalyst is used for reaction 2.

The answer would be true

Not a  mixture of two common elements that can be separated by physical means.

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. 

Ansel nino;