Question

calculate the number of molecules in 4 gram of oxygen

Answer 1

no of moles =mass in gram/molar mass =4/32 =0.125mol
number of molecules = 0.215×6.023×10(23) =7.52×10 (22)

Answer 2

Answer:7.52×10²²

Explanation:

No of moles =mass in gram/molar mass =4/32 =0.125mol

number of molecules = 0.215×6.023×10(23) =7.52×10²²