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n udara=4/3
n intan=5/2
Ditanyakan :
1.n air terhadap intan?
2.n intan terhadap air?
Dijawab:
(1)n₁₂=n intan : n air
=5/2 : 4/3
=5.3 :4.2
=15 : 8
=1,875
(2)n₂₁=n air :n intan
=4/3 :5/2
=4.2 :5.3
=8:15
=0,533
~~selesai~~