Draw a Lewis structure of the molecule that matches the description below. All non-

H

atoms should have full octets, and all formal charges should be zero. Unless you're told otherwise, assume there are no rings in the molecule.

Description: The molecule is composed of

2

C

's,

5

H

's, and

1

N

and it contains a

C

-

C

double bond.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

What methods could you use to solubilize calcium carbonate