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

i believe it is a.) released into

explanation:

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.