If an element gains 1 electron, what charge will it have? +1

-1

+7

-7

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

Iknow the answer is a but i don't know why

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.