How many atoms are present in 0.0845 moles of tungsten (w)?

I mole of tungsten (W) has an Avogadro Number of atoms

I mole of tungsten (W) has an 6.02 * 10²³ Number of atoms

0.0845 mole of tungsten would have:

                                                                         0.0845 * 6.02 * 10²³

                                                                          = 5.0869 * 10²²  atoms

Particle exchange energy though elastic collision , hope this .