Use the activity series to predict the half-reaction that occurs at the anode and the half-reaction that occurs at the cathode of a voltaic cell for the following combination of half-reactions. [The notation Cr(s)/Cr2 (aq) used below indicates the components of one of the half cells: Cr metal electrode placed in an aqueous solution of Cr2 (aq)].
Cr(s)/Cr2 + (aq) and Ag(s)/Ag + (aq)Anode:Cathode:

The answers is a nuclear changes

Ibelieve its because the stove is a cleaner burning fuel

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.