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A 70g coffee powder is added in water and to make a total solution of 280g. Find its percent by mass concentration​

Sagot :

Given:

[tex]mass_{solute} = 70 \: g[/tex]

[tex]mass_{solution} = 280 \: g[/tex]

Required:

[tex]\% \: by \: mass[/tex]

Equation:

[tex]\% \: by \: mass = \frac{mass_{solute}}{mass_{solution}} \times 100[/tex]

Solution:

[tex]\% \: by \: mass = \frac{70 \: g}{280 \: g} \times 100[/tex]

Answer:

[tex]\% \: by \: mass = 25\%[/tex]

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