Question

A solution is prepared by adding 2 g of a
substance A to 18 g of water. Calculate
the mass per cent of the solute.​

Answer 1

Explanation:

Concentration of solute(mass by mass percent)=

mass of solution= (mass of solute + mass of solvent)

= ( 2 + 18 ) g

= 20 g

=

$\frac{mass \: of \: solute}{mass \: of \: solution} \times 100$

$= \frac{2}{20} \times 100$

= 10 g

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