Так как подливали только воду, масса уксусной кислоты в растворе не изменилась. Составляем уравнение: 0,08(200 + х) = 0,7•200
16 + 0,08х = 140
0,08х = 124
х = 1550г
Ответ :1,55 кг воды.
Hello! My name is Pit I'm working on radio. And today I'll tell you about the interview. - Hi Mark! - Hi - Today we will talk about your family! - No, we will not do it. - Why don't speak about this. - In my opinion it's personal. - Yes, that is right. - I must say that it is not a pleasant topic for me. - Okay! Mark all say that you are very greedy. - I'm afraid you are wrong I'm thrifty, - I mean that you do not give money to charity as the other - I think you need to finish our interview - I think so too, by Mark
Hello! My name is Pit I'm working on radio. And today I'll tell you about the interview. - Hi Mark! - Hi - Today we will talk about your family! - No, we will not do it. - Why don't speak about this. - In my opinion it's personal. - Yes, that is right. - I must say that it is not a pleasant topic for me. - Okay! Mark all say that you are very greedy. - I'm afraid you are wrong I'm thrifty, - I mean that you do not give money to charity as the other - I think you need to finish our interview - I think so too, by Mark
16 + 0,08х = 140
0,08х = 124
х = 1550г
Ответ :1,55 кг воды.