An oxygen sample has a volume of 4.50 L at 27 C and 800.0 torr. How many oxygen moles does it contain? How many molecules does it contain?
Someone please answer this

Explanation:

Given

Volume of oxygen sample

Temperature

Pressure

Using ideal gas equation

Where R=universal gas constant

n=no of moles

So no of molecules

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

a electronegativity decreases beacuse the size of nucleus is bigger.