What is the total number of atoms contained in 2.00 moles of nickel?

The number of atoms that are contained in 2.00 moles nickel is calculated by use of Avogadro law constant

that is 1 mole = 6.02 x10^23 atoms

what about 2 moles = ? atoms

= (2moles / 1mole) x 6.02 x10^23 atoms = 1.204 x10^24 atoms of nickel are there in 2 moles of nickel

Avagadros number states that 1 mol of any substance is made of 6.022 x 10²³ units. These units could be atoms making up elements or molecules making up compounds.

1 mol of Nickel (Ni) is made of 6.022 x 10²³ atoms of Ni

therefore 2.00 mol of Ni is made of 6.022 x 10²³ x 2.00 = 1.20 x 10²⁴ atoms of Ni

therefore 2.00 mol of Ni is made of 1.20 x 10²⁴ atoms of Ni