Which motion is the best model to use to illustrate passive transport? going over a hill going around a carousel going down a slide going through a tunnel

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid