apd1209 apd1209

18-11-2017
Chemistry

contestada

how many grams of NaCl are in a 388.5g sample of a 1.25% (m/m) NaCl solution?

Respuesta :

meerkat18 meerkat18

28-11-2017

The concentration given is a mass percentage of the NaCl solution, as denoted by (m/m). A concentration of 1.25% means that there are 1.25 g of NaCl solute per 100 g of NaCl solution. Thus,

388.5 g (0.0125) = 4.856 g of NaCl present

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