One atom of an element `x` weight `6.643xx10^(-23)g`. Number of moles of atom in `20` kg is :

One atom of an element x weight 6.643xx10^(-232)g . Number of moles of atom in 20 kg is :

One atom of an element x weighs 6.643 xx 10^(-23)g . Number of moles of atoms in its 20kg is :

One atom of an element x weighs 6.643 xx 10^(-23)g . Number of moles of atoms in its 20kg is :

One atom of an element x weighs 6.643 xx 10^(-23)g . Number of moles of atoms in its 20kg is :

One atom of an element X weighs 6 xx 10^(-23) gm . Number of moles of atoms in 3.6 kg of sample of X will be : (N_(A) = 6 xx 10^(23))

One atom of an element X weighs 6 xx 10^(-23) gm . Number of moles of atoms in 3.6 kg of sample of X will be : (N_(A) = 6 xx 10^(23))

One atom of an element weight 3.32xx10^(-23) g. How many number of gram atoms are in 20 kg of the element?