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caomai71
2 năm trước
Trộn 2 khí hidro và oxi được hhA với thể tích 13,44 lít (đo dktc) a Tính thành phần thể tích hhA có trong bình ?Biết 1,12lit A ở dktc nặng 0,55g b hỗn hợp A nặng hay nhẹ hơn không khí mấy lần
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Gordon has worked at his company for 25 years, and next week, he (1) _____________ (get) a bonus of three weeks paid holiday. Therefore, we’ve decided to hire a car and drive around Eastern Europe. We (2) _____________ (leave) at the end of August, and our aim is to visit as many countries as we can. We (3) _________________ (fly) out to Budapest. We (4) __________________ (catch) a plane on the 28th and then (5) _____________ (stop) over at a friend's house before starting our tour. We (6) __________________________ (probably / spend) the best part of a week in Hungary. When we finish staying there, we (7) ___________________ (go) to Romania, but beyond that we haven't planned anything. We'd like to go to Russia, but I think we (8) ___________________ (not / have) enough time. I hope it (9) ___________________ (not / be) too expensive. I can't wait for our tour.

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