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n = V : Vstp
V = n * Vstp
V = 0.25 * 22,4 = 5.6 L
B) Massa = 5 gr
Mr= 32 + 2 = 34
n = massa : mr
= 5 : 34 = 0.14
n = V * Vstp
V = 0.14 * 22.4 = 3.294 L
C) n = jumlah molekul : bil. avogadro
= 3,01 * 10^22 : 6.02 * 10^23 = 0.05
V = n * Vstp
= 0,05 * 22.4 = 1,12 L
semoga bermanfaatt:)