Question

У воді масою 250 г розчинили 65 г цукру. Яка масова частка розчиненої речовини в отриманому розчині?​

Answer 1

Ответ:

Приблизно 21 %, якщо з десятками, то 20,6%.фото.

Answer 2

Calculation of Mass Fraction

To calculate the mass fraction of the dissolved substance in the solution, we need to divide the mass of the dissolved substance by the total mass of the solution and then multiply by 100 to express it as a percentage.

Given: - Mass of the solution (m_solution) = 250 g - Mass of the dissolved substance (m_dissolved) = 65 g

To find the mass fraction (w_dissolved), we can use the following formula:

w_dissolved = (m_dissolved / m_solution) * 100

Substituting the given values into the formula:

w_dissolved = (65 g / 250 g) * 100

Calculating the result:

w_dissolved = 26%

Therefore, the mass fraction of the dissolved substance in the obtained solution is 26%.

Please note that the search results did not provide specific information for this particular question. The calculation was done based on the given values and the general formula for calculating mass fraction.