Home
Class 11
CHEMISTRY
One atom of an element X weighs 6.644 xx...

One atom of an element X weighs `6.644 xx 10^(-23)` g. Calculate the number of gram-atoms in 40 kg of it.

Text Solution

Verified by Experts

Wt. of 1 mole of atoms of X = wt. of 1 atom x Av. const.
`=6.44 xx 10^(-23) xx 6.022 xx 10^(23)`
= 40 g
Thus, the at. Wt. Of X=40
No. Of moles (or gram-atoms) of X `=("weight in g")/("at. Wt")`
`=(40 xx 1000)/40 = 1000`
Promotional Banner

Similar Questions

Explore conceptually related problems

Calculate the number of atoms in 48 g of He?

Calculate the number of atoms in. a. 1g of hydrógen

Calculate number of atoms in 8 g Helium

Calculate the number of atoms present in 1.4 g of N_2 molecule.

One gram atom of an element contains 6.023xx10^23 atoms. Find the number of atoms in 8 g oxygen.

One mole of an element contains 6.022xx10^23 atoms. find the number of oxygen atoms in 4 g of O_2 .

An element crystallises' into a, structare which may be described by a cubic type of unit celt having one atom on each C0rner of the cube and two atoms on one of its diagonals. If yolume of this unit cell is 24x 10^-(24) cm^3 and density of element is 7.2 g / cm^-3 . calculate the number of atoms present in 200 g of the element .

Calculate the mass of one 12_C atom in gram.

Mass of one atom of X is 6.66xx10^(-23)g . Hence number of mole of atom X in 40kg is