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= 8/80
= 0,1 mol
V₁ = 2,5 Liter
n₁ = 0,1 mol
V₂ = 15 Liter
* Mencari dulu mol gas NO :
V₁/n₁ = V₂/n₂
2,5/0,1 = 15/n₂
2,5 x n₂ = 0,1 x 15
n₂ = (0,1 x 15) / 2,5
n₂ = 0,6 mol
* Mencari massa gas NO
massa = mol x Mr
massa = 0,6 x 30
massa = 18 gram
Jadi, massa gas NO adalah 18 gram (Jawaban E)