Help please I don’t understand this. The last columm

You can calculate the total number of atoms by multiplying the subscripts by the element. I will use the first example to explain this.

Fe2(SO3)3

- Fe has the subscript 2, so there are 2 Fe atoms

- The subscript 3 (after the SO3 bracket) will be multipled in, so multiple everything in the bracket by 3

- S has no subscript after it, so it contains one atom. However, due to the subscript 3 after the bracket, we multiple this by 3. So S has 3 atoms.

- O has a 3 subscript after it, so it contains 3 atoms. However, we have to make sure to multiple it by 3. Therefore, O will have 9 atoms.

If we add all these values we will get the total number of atoms. 2 + 3 + 9 = 14. Therefore, the total number of atoms is 14.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

and ur welcm

: )

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.