Pickles are preserved in a solution of salt and acid (usually vinegar). This will corrode common metals which will result in a leaky container and possibly a toxic dose of the metal to the pickles. If your pickle container was made out of gold, platinum or some other very unreactive metal, this wouldn't be a problem, however, this is not usually economically feasible. Hence pickles are commonly stored in plastic containers. Which property of the plastics makes the storage of pickles possible?

16- counting by fours

The answers are 3.c kelvin4.b liquids only

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.