Dalam 1 mol NaOH (Ar Na = 12, O = 16, H =1) terdapat persen massa natrium (Na) sebesar….
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Penjelasan:
Massa molar NaOH = Ar Na + Ar O + Ar H = 23 + 16 + 1 = 40 g/mol
Persen massa natrium (Na) dalam 1 mol NaOH = (Ar Na / massa molar NaOH) x 100%
= (23 / 40) x 100%
= 0,575 x 100%
= 57,5%
Jadi, dalam 1 mol NaOH terdapat persen massa natrium (Na) sebesar 57,5%.
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