Mathematics, 15.06.2021 14:00 kimlyn58p0wyn0

Một bể chứa 100 lít ( l
) nước. Một dung dịch có nồng độ muối là
0.4 / kg l
được bơm
vào bể với tốc độ
5
lít mỗi phút. Dung dịch được khuấy đều và cho chảy ra khỏi bể với tốc độ 3 lít mỗi
phút. Hãy xác định lượng muối trong bể (tính bằng kilôgam) sau
20
phút.

Answers: 3

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Một bể chứa 100 lít ( l
) nước. Một dung dịch có nồng độ muối là
0.4 / kg l
được...

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