Question

How many moles of bromine (Br) atoms are in a sample of 2.03 × 10^24 atoms? Thank You!

Answer 1

1 mole Br -------------------- 6.02x10²³ atoms
?? moles Br ---------------- 2.03x10²⁴ atoms

( 2.03x10²⁴) x 1 / 6.02x10²³ =

2.03x10²⁴ / 6.02x10²³ => 3.37 moles of Br

hope this helps!