Question

how many silicon atoms are present in a silicon chip that has a mass of 3.24g?

Answer 1

Answer:

6.96 × 10²² the answer is given in above picture

Answer 2

Mass=3.24

Molar mass=28

Moles =mass/molar mass

Moles=3.24/28=0.115

Moles= Nsilicon atoms/Na

N silicon atoms=0.115×6.023×10^23

N silicon atoms=0.69×10^23

I hope this helps ( ╹▽╹ )