From the unbalanced equations below, identify the one that does not represent a redox reaction. a. h2co3(aq) → co2(g) + h2o(l) b. c(s) + h2o(g) → co(g) + h2(g) c. s2o32- (aq) + i2(s) → s4o62+ (aq) + i-(aq) d. febr2(aq) + br2(l) → febr3(aq) reset selection

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.

po-215 i got it right on the quiz