Calculate the number of atoms in a 4.08 × 103 g sample of cesium.

Question

asked Oct 9, 2017 191k views

1 Answer

Troynt · Answer 1 · 2017-10-15T17:56:52+0000

number of moles= mass/molar mass
=4.08/ 132.9= 0.031

number of atoms= number of moles x avogadros constant
=0.031 x 6.02 x 10^23
=1.87x10^22