Question

the weight of a molecule of a compound C60h122 is

Answer 1

Please type the molecules formula correctly other wise It leads to confusion.

So, the Molecule iS C₆₀H₁₂₂ 
Molecular mass of C₆₀H₁₂₂ --- [60x12+1x122]
=720+122
=842 Unified mass
Weight of one molecule of C₆₀H₁₂₂ :
=molecular weight of C₆₀H₁₂₂ / Avogadro's number
=842/6.023x10²³
=1.4x10⁻²¹ g

∴The weight of a molecule of a compound C₆₀H₁₂₂ is 1.4x10⁻²¹ g

Answer 2

given C60H122 = 12*60+1*122=720+122=842 it is a unified mass.weight of 1 molecule of C60H122= molecular weight of C60H122/Avogadro's number=842/6.023*10^23=1.4*10^-21 grams