Respuesta :

kenmyna
The  mass   percent  of  a NaCl  solution  prepared  by  mixing  47.0  g NaCl with  125.0 Ml  of pure  water   is  27.3%

    calculation
   % mass  =mass  of  solute / mass  of the solvent  x 100
 mass of the solute(NaCl )=  47 g

mass of the solvent =   mass  of pure water + mass  of  NaCl
convert  125 Ml  of pure water   to grams
that is  1 ml = 1 g   therefore 125ml = 125  g

mass  of solvent   is therefore= 125g+ 47=172g


 therefore the %   mass =  47/172 x100 =  27.3 %

The mass percent of a NaCl solution prepared by mixing 47.0 g NaCl with 125.0 ml of pure water is 27.3%.

How do we calculate mass percent?

Mass percent of any substance present in any solution will be calculated by using the below equation:

% mass = (mass of solute/total mass of solution) × 100%

Given that, mass of solute i.e. NaCl = 47g

Volume of solvent i.e. pure water = 125mL

We know that 1mL = 1g, so 125mL = 125g

Total mass of solution = mass of solute + mass of solvent

Total mass of solution = 47 + 125 = 172g

On putting values we get

% mass = (47/172) × 100%

% mass = 27.3%

So, mass percent of NaCl is 27.3%.

To know more about mass percent, visit the below link:

https://brainly.com/question/13896694

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