An sn2 reaction is a type of choose. In which the nucleophile attacks the electrophile choose. A leaving group leaves. The rate of the reaction depends on the concentration of choose. .

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

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. 

When china's civil war resumed, the nationalists held an advantage because the nationalist had more soldiers  than the communist.