Question

Please tell me fastely guyes

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Answer 1

Mass percentage of solution is 28.6%

Explanation:

To calculate the mass percentage ,we use the formula:

\text{mass percent}=\frac{\text{mass of solute}}{\text{ of solute+ of solvent}}\times 100mass percent= of solute+ of solventmass of solute×100

mass of solute (sugar) = 40 g

mass of solvent (water) = 100 g

\text{mass percent}=\frac{\text{mass of sugar}}{\text{mass of sugar+ mass of water}}\times 100mass percent=mass of sugar+ mass of watermass of sugar×100

\text{mass percent}=\frac{40g}{40g+100g}\times 100=28.6\%mass percent=40g+100g40g×100=28.6%

Thus mass percentage of solution is 28.6%

Answer 2

Answer:

Mass of solute : 40g

Mass of solution : 100g

Concentration : mass of solute + mass of solution/mass of solute

= 40 + 100/40 × 100

140/40 × 100

= 28.57%(approx)

Explanation: