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Thuyduong1365
2 năm trước
Cho m(g) Al2(SO4)3 phản ứng hoàn toàn vói 17.5ml dd Ba(OH)2 2M. Sau phản ứng thu được 7.77g kết tủa. Tính m ( mn khi giải nhớ giải thích kĩ chỗ kết tủa giúp mk vs ạ!!!!!!!!!)
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VII. Complete the text with one word in each gap. Family life _____ (1) changing a lot these days. In some countries, all the members of a family _____ (2) in the same place, sometimes in the same home. However, in other countries, people often have to move away from their home town to find a job when they are ready to start work. They get married and start _____ (3) family away from their parents, and then their children do exactly the same thing. Grandparents sometimes live hundreds of miles away from their grandchildren. Sometimes they are even in _____ (4) different country! This can cause a lot of problems when people _____ (5) older. Sons and daughters can't help their parents when they are ill and they have to go into hospital or special homes. The grandparents are _____ (6) there to help with the grandchildren when they are young. Some parents have to send _____ (7) children to special schools at a young age if they need to go to work. In many countries, this problem is getting worse _____ (8) people are worried that family life is never going to be the same again.

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