Question

Calculate the number of atoms of the constitute elements in 53g of Na2CO3​

Answer 1

Explanation:

Avagadro's constant states that 1 mole of any substance has 6.022×10²³ molecules/atoms.

Find the number of miles of 53g of Na2CO3:

molar mass Na2CO3=23×2+12+16×3=(46+12+48)=106

moles=mass/molar mass

=53/106

=0.5 moles

1mole=6.022×10²³ atoms

Then 0.5 moles =6.022×10²³×0.5 atoms

=3.011×10²³ atoms of Na2CO3