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lethicamtu
2 năm trước
Dẫn 2,24 lít khí CO2 đktc vào 100ml dung dịch Ba(OH)2 0,8M. Sau khi phản ứng hoàn toàn sẽ thu được lượng kết tủa là bao nhiêu?
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1.Turn these sentwnces into reported speech. 1.'We met Professor Stephen Marshall yesterday' said Peter. 2.'I cannot go to science class tomorrow moring'.Said Hoa. 3.'They have studied this kind of plant for two months' she told us. 4.'We don't open the laboratory today'Mr.Vinh said. 5.'I'm finding evidence for my reasearch now'said Nick. 6.'You may be late for the workshop this afternoon' i told Mary. 7.'I didn't teach Earth Science last year' said Dr.Thomas. 8.'We will start collecting the data next month' Minh said to me. 2.Turn these sentenses from reported speech into direct speech. 1.Albert Einstein stated that once you stopped learning,you started dying. 2.Lan told me that she would do camping with her classmates the next day. 3.The scientists told that in the near future,robots in our home would do all the housework for us. 4.I believed science and technology were the keys to develop in the society.

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