What is the empirical formula for a compound if an 8.1 g sample contains 4.9 g of magnesium and 3.2 g of oxygen? a. mgo

b. mgo2

c. mg2o

d. mg2o3

chem homework !

The empirical formula of the compound is determined by converting the individual masses of each element to moles first. Hence for Mg, this is equal to 0.2042 moles, and oxygen is equal to 0.2 moles. We divide the number of moles to the smaller value between the two. For Mg, that is 1 as well as for oxygen. Hence the answer is MgO or magnesium oxide.

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.

They did not study the continental drift