Question

5x10-6 mol Na2C2O4 bileşiğinde kaç tane O atomu vardır?

How many oxygen atoms are present in 5x10-6 mol Na2C2O4 ?

Answer 1

There are 1.204 x 10¹⁹ atoms O

Further explanation

The empirical formula is the smallest comparison of atoms of compound forming elements.

A molecular formula is a formula that shows the number of atomic elements that make up a compound.

1 mol of molecule Na₂C₂O₄ :

There are 4 mol of O in 1 mol of molecule Na₂C₂O₄

So for 5 x 10⁻⁶ mol Na₂C₂O₄ :

`\tt mol~O=4* 5.10^(-6)=2.10^(-5)`

1 mole = 6.02.10²³ particles , so number of atoms O :

`\tt 2* 10^(-5)* 6.02* 10^(23)=1.204* 10^(19)`