Answer:
4.52 ×10²² atoms (3 s.f.)
Step-by-step explanation:
Number of atoms
= number of moles × Avogadro's constant
= number of moles × 6.022 ×10²³
= 0.075 × 6.022 ×10²³
= 4.52 ×10²² (3 s.f.)
5.2m questions
6.8m answers