Jawabanmu

2016-10-31T07:01:15+07:00
No. 1
Mr O₂ = 32
Jumlah molekul = mol x bilangan Avoadro, atau
N = [massa / Mr] x bilangan Avogadro
N = [84 / 32] x 6,02.10²³
N = 1,58 x 10²⁴ molekul

No. 2
Mr NO = 30
N = [15 / 30] x 6,02.10²³
N = 3,01 x 10²³ molekul
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