How many atoms are present in 3 moles of chromium?

1 mole  chromium 6.02 x 10²³ atoms
3 moles chromium ( atoms chromium )

atoms chromium = 3 x ( 6.02 x 10²³) / 1

atoms chromium = 1.806 x 10²⁴ / 1

= 1.806 x 10²⁴ atoms of chromium

hope this helps!