Use the standard half-cell potentials listed below to calculate the AGº for the following balanced redox reaction at 25 °C.
2AI
(s)
+ 3 Mg2+ (aq)
+ 2 A13+
(aq)
+ 3 Mg(s)
Mg2+ (aq)
+ 2 e →
Mg(s) Ered = -2.38 V
(aq)
+ 3 e
Ered = -1.66 V
Al(s) -
-
A13+

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.