The number of atoms in 2.50 mol Cr

1.51 x 10²⁴atoms

Explanation:

Given parameters:

Number of moles of Cr = 2.50mol

Solution;

what is a mole;

a mole of any substance is the amount of substance that contains the avogadro's number of particles which is 6.02 x 10²³ particles

The particles here can be atoms, protons, neutrons, electrons e. t. c

1 mole contains 6.02 x 10²³ atoms

2.5 moles will contain 2.5 x 6.02 x 10²³ = 1.51 x 10²⁴atoms