A solution is made by dissolving 4.12 g of NaCl in 80 mL of water. What is the concentration of sodium chloride in units of weight/volume percent?

Hydrogen is the most abundant element on the periodic table..hope it .

Ijust took the quiz. their is no coefficient needed. : )

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. 

Precipitate, and gas