Question

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

Answer 1

`\% m=8.0\%`

Step-by-step explanation:

Hello,

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

`\% m=(m_(solute))/(m_(solution))* 100\%=(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=(4g)/(4g+46g)* 100\%\\\\\% m=8.0\%`

Best regards.

Answer 2

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%