Mass of one atom of an element is 6.66xx10^(-23) g. How many moles of element are there in 0.320 kg?

Mass of one atom of an element is 6.66xx10^(-23) g. How many moles of

1.	Mass of one atom of an element is 6.66xx10^(-23) g. How many moles of element are there in 0.320 kg?
Answer» SOLUTION :MASS of one atom of an element = `6.66xx10^(-23)` g No. of MOLES =`("Mass")/("Molecular mass")` Molecular mass = Mass of 1 atom `XX` Avogadro number = `6.66xx10 ^(-23)xx 6.023xx10^(23) ` = 6.66`xx`6.023 =40.11318 Number of moles = `("Mass")/("Molecular mass") = (0.320 kgxx10^(3))/40` = `720/180 `= 8 moles