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tamsinhtamthe197
2 năm trước
Hòa tan 8 gam MO ( M là kim loại) cần vừa đủ 200ml dd H2SO4 0.5M. a,Xác định kim loại M và oxit của nó b,Nếu dùng 5,6 lít H2 (đktc) khử 16 gam MO ở nhiệt độ cao.Sau pứ ta thu được bao nhiêu gam kim loại M?
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B.Read the passage carefully, then choose the correct answers. This is part of a report by the Chairman of the Charities Commitee of a Club. By Match this year, we shall have raised enough money, we hope, to buy the equipment for the Youth Club. When we have raised the money, we are planning to go back to the Youth Club leaders in order to discover exactly what is needed most. Plans have been made for the Book Sale which will be held on 15th February, This means that many of us will be spending the first two weeks of February collecting books. The event is likely to be held in the Town Hall. If there are problems here, however, we hope that other Club members might come up with some alternative suggestions. As we are proposing to sponsor a student from Africa on a three-month language course in this country, we also intend to hold a Charity Dance in the spring. Such events are apt to be difficult to organize, so all members of the Club are invited to contribute or help in any way they can. The moment I was asked if we could possibly help in some way with the new Club for the Disabled. I said yes. As Chairman, lam bound to say that this is the sort of social work many Club members would like to do, other than simply raising money. We are therefore planning to ask members if they can perhaps help out 'on one Saturday every month (on a rota basis). Finally, by January next year the Club will have been going for twenty years, and the Committee intend to mark this anniversary with some kind of dinner, a dance or a party. We have already been offered (unofficially) the use of the dance all at 'The Forest Hotel'. However, we shall be devoting one of our meetings in the near future to full discussion on the form of the event, etc. Any suggestions will be welcome. 41.The Committee will be going back to the Youth Club leaders ______. a. to ask for money in March b. to tell them about the equipment c, to find out what the Club needs d. to collect old books from them 42.The Committee does not yet know ______. a. when books will be collected b. when the Book Sale will be held c, how to get the book to the Town Hall d where the Book Sale will take place 43.Every Club member has been asked ______. a. to help with the Charity Dance b. to sponsor a foreign student c. to write to an African student d. to organize something for the Dance 44.In order to help the new Club for Disabled, members will be asked ______. a. to raise some money b. to make a contribution c. if they can plan a Club program d. to help at the Club one a month 45.There will be an event next January ______. a. because the Club has been offered 'the Forest Hotel’ b. to celebrate the Club's twentieth birthday c. to raise money for a student from Africa d. which will take the form of a discussion evening

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