Question

A solution contains 50 gms of NaCl in 400 gms of water. Calculate the
concentration in terms of mass by mass percentage of the solution.​

Answer 1

Explanation:

☞Given :

$\sf\purple{Mass\: of \:solute = 50g}$

$\sf\purple{mass \:of \:solvent = 400g}$

☞To Find :

Calculate the concentration in terms of mass by mass percentage of the solution.

☞Solution :

$\sf\green{mass \:of \:solution = 50 + 400 }$

$\sf\green{mass \:of\: solution = 450g}$

$\sf\pink{mass \:by \:mass =>\frac{mass \:of\: solute×100 }{ mass\: of\: solution }}$

Substitute all values :

$\sf\blue{mass\: by\: mass = \frac{50×100}{450 }}$

$\sf\blue{= \frac{100}{9}}$

$\sf\blue{= 11.1}$%

$\sf\red{Hence\: mass\: by \:mass}$%$\sf\red{ = 11.1}$%

Answer 2

refer to the attachment