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gramos solucion
gramos soluto = % × gramos solucion
100
gramos soluto = 5,65 g/g × 225 g
100
gramos soluto = 12,7125 g
moles soluto = gramos soluto / Masa Molar
Msa Molar NaCl = 23 g/mol ×1 + 35,5 g/mol ×1
= 23 + 35,5
= 58,5 g/mol
moles soluto = 12,7125 g
58,5 g/mol
mol soluto = 0,217 mol