Question

В 80г воды растворили 40г сахара.Рассчитайте массовую долю сахара в полученном растворе.

Answer 1

Как мне кажется надо сделать так:
40:(40+80)=0,3= 30% массовая доля.

Answer 2

To calculate the mass fraction (also known as mass percentage or mass percent) of sugar in the solution, you can use the following formula:

Mass Fraction (%) = (Mass of solute / Mass of solution) * 100

Where:

• Mass of solute is the mass of the sugar (40g in this case).
• Mass of solution is the total mass of the solution (80g in this case, which is the mass of water + mass of sugar).

Let's calculate it:

Mass of solute (sugar) = 40g Mass of solution (water + sugar) = 80g

Mass Fraction (%) = (40g / 80g) * 100 Mass Fraction (%) = 0.5 * 100 Mass Fraction (%) = 50%

So, the mass fraction of sugar in the solution is 50%.