Which of the following is an sp2 hybridized carbon? A. CH3+

B. CH3

C. CH3- (lone pair),

D. CHS3 and CH3+

E. CH3 and CH3+ and CH3 (lone pair)

CH3+

Explanation:

Sp2 hybridization involves the mixing of on s and two p orbitals. This is observed in CH3+. The ion is trigonal planar with a H-C-H bond angle of 120°.

The anion, CH3^- is sp3 hybridized, hence only CH3+ is sp2 hybridized among the options.

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.