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Cálculo de la cantidad en Moles del soluto :
1 mol NaOH ----------- 58.5 g
moles NaOH ---------- 1.2 g
moles NaOH = 1.2 * 1 / 58.5
moles NaOH = 1.2 / 58.5
moles NaOH = 0.0205
Volumen en litros : 100 mL / 1000 => 0.1 L
entonces:
M = moles soluto / volume
M = 0.0205 / 0.1
M =0.205 mol/L