Penjelasan:
Ar Na = 23, Br = 80
Mr NaBr = Ar Na + Ar Br
= 23 + 80
= 103
mol NaBr = massa NaBr/ Mr NaBr
= 20,6 / 103
= 0,2 mol
jumlah molekul NaBr
= mol NaBr x bilangan Avogadro
= 0,2 x 6,02 x 10^23
= 1,204 x 10^23 molekul
semoga membantu.
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Penjelasan:
Ar Na = 23, Br = 80
Mr NaBr = Ar Na + Ar Br
= 23 + 80
= 103
mol NaBr = massa NaBr/ Mr NaBr
= 20,6 / 103
= 0,2 mol
jumlah molekul NaBr
= mol NaBr x bilangan Avogadro
= 0,2 x 6,02 x 10^23
= 1,204 x 10^23 molekul
semoga membantu.