In doing a recrystallization, student A obtains the following data: MP of recrystallized material: 109-111 oC Mixed MP with recrystallized material and student choice of known: 94-104 oC If you were the student, which compound would you pick as the best and mostly likely known to do a mixed MP?

60.0 - there are 3 significant numbers

27. =3,500,000 x 4,000 = 14,000,000,000

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.