Question

ДОПОМОЖІТЬ БУДЬ ЛАСКА До 400г 10% розчину соди досипали 100г соди. Якою стала масова частка соди розчині.? відповідь записати одним числом, без позначення відсотків відсотків

Answer 1

Спочатку в розчині було 10% * 400г = 40г соди.

Після досипання ще 100г соди, загальна кількість соди в розчині стала 40г + 100г = 140г.

Масова частка соди у новому розчині:

маса соди / загальна маса розчину * 100%

140г / 500г * 100% ≈ 28

Отже, масова частка соди в новому розчині стала близько 28%.

Answer 2

Ответ:

Объяснение:

400*10+100*100=500х

4000+10000=500х

14000=500х

х=28

Answer 3

I can help you with your question.

Your question is: Answer in detail. PLEASE HELP. To 400 g of 10% soda solution, 100 g of soda was added. What was the mass fraction of soda in the solution? The answer should be written as a single number, without the percentage sign.

To solve this problem, we need to find the mass of soda and the total mass of the new solution after adding 100 g of soda. Then, we can use the formula for the mass fraction of a substance in a solution:

mass fraction = (mass of substance / total mass of solution) * 100%

The mass of soda in the original solution is 10% of 400 g, which is 40 g. The mass of soda in the new solution is 40 g + 100 g, which is 140 g. The total mass of the new solution is 400 g + 100 g, which is 500 g. Therefore, the mass fraction of soda in the new solution is:

mass fraction = (140 g / 500 g) * 100% mass fraction = 0.28 * 100% mass fraction = 28%

The answer is 28. The mass fraction of soda in the new solution is 28%. You can check your answer by looking at some web search results that I found for you . I hope this helps. Have a nice day!