What is the number of electrons shared between the
atoms in an i2 molecule?
a) 7 b) 2 c) 8 d) 4

answer:

b)2

explanation:

iodine forms a diatomic non-polar covalent molecule. the graphic on the top left shows that iodine has 7 electrons in the outer shell. since 8 electrons are needed for an octet, two iodine atoms equally share 2 electrons.

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.