Answer to Question #87473 in General Chemistry for Daniel Black

Question

After a reaction, a new compound contains 24.3 g Mg and 16.0 g O. What is the empirical formula of this compound?

Answer 1

Solution.

Firstly, we find the number of moles of elements in an unknown substance and make up a ratio.

n(Mg) = 24.3 g/ 24.3 g/mole = 1 mole

n(O) = 16.0 g / 16 g/mole = 1 mole

n(Mg):n(O) = 1 : 1

So, the empirical formula of substance is MgO

Answer:

So, the empirical formula of substance is MgO