Question

The weight of one molecule of a compound of molecular formula C₆₀H₁₂₂ is
(a) 1.2 × 10⁻²⁰ g
(b) 5.025 × 10²³ g
(c) 1.4 × 10⁻²¹ g
(d) 6.023 × 10⁻²⁰ g

Answer 1

Atomic weight of Carbon-12.0107

Hydrogen-1.0079.

So weight of 60 Carbon atoms-12.0107×60=720.642

And weight of 122 Hydrogen atoms-1.0079×122=122.9638

weight of C60H122=720.642+122.9638=843.6058.

Thank you.