Question

Berapa gram massa dari 2,408 x 10^23 molekul C2H6(Ar C=16,H=1)?
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Answer 1

molekul C2H6 = mol x 6,02 × 10²³

2,408 × 10²³ = mol x 6,02 × 10²³

mol = 0,4 mol

G = n x Mr

= 0,4 x (12 + 12 + 6)

= 0,4 × 30

= 12 gram

nb : Ar C = 12