Can someone help me?

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

If a || b and e || f, what is the value of y ?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?