Step-by-step explanation:
C have 2 molecules
So No of atoms in C = 0.2 × 2 × 6.023 × 10²³
= 2.4092 × 10²³ Atoms
H have 4 molecules
So no of atoms in H = 0.2 × 4 × 6.023 × 10²³
= 4.8184 × 10²³
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