The half reaction at the cathode in an electrochemical is given below. what other half reaction would most likely occur at the anode to produce a spontaneous reaction. ni^2+(aq)+2e-> ni(s)

a)cu(s)-> cu^2+(aq)2e-
b)mg^2(aq)+2e- -> mg(s)
c)zn(s)-> zn^2(aq)+2e-
d) ni(s)-> ni^2+(aq)+2e-

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

може ли да зареждате повече информация, моля

it's c (engineer's do their work with mechanical stuff not on any living being)