2Mg + O2 forms the compound magnesium oxide (2MgO).

How many molecules of magnesium oxide are represented?

three
four
one
two

two (2) molecules

Explanation:

the coefficient (the large number that comes before a chemical formula) is 2

This means that there are two molecules of MgO

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

answer7,570,82356 cubic centimeters;