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3 years ago

4g of sugar is dissolved in 46 g of water calculate the concentration as percent by mass

Chemistry

2 answers:

Lubov Fominskaja [6]3 years ago

5 0

Answer:

$\% m=8.0\%$

Explanation:

Hello,

In this case, the percent by mass is computed as:

$\% m=\frac{m_{solute}}{m_{solution}}* 100\%=\frac{m_{solute}}{m_{solute}+m_{solvent}}* 100\%$

In this case, as sugar is the solute and water the solvent, the required percen by mass is:

$\% m=\frac{4g}{4g+46g}* 100\%\\\\\% m=8.0\%$

Best regards.

Lina20 [59]3 years ago

3 0

The concentration as % by mass is calculated as below

mass of solute/mass of solvent x100
mass of solute(sugar) = 4g
mass of solvent(water) =46 g

= 4g/ 46 g x100 = 8.7%

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