Question

calculate the number of molecules in 8 gram of Oxygen gas​

Answer 1

Explanation:

-->moles of O2 = 8÷16 = 0.5

(molar mass of oxygen= 16)

moles= no. of molecules ÷ Avagadro's number

therefore, 0.5 × N = no. of molecules

thus, no of molecules= 3.011 × 10^23