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hanguyen84hb
2 năm trước
Chỉ dùng thêm dung dịch HCl , hãy nêu cách nhận ra từng chất rắn sau đựng trong các lọ mất nhãn sau : Na2CO3 , NaCl , BaSO4 và CaCO3
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Các câu hỏi liên quan

Viết lại các câu sau sao cho nghĩa không thay đổi: 1) Although Tom was a poor student, he studied very well. => In spite of ______________________________________________ 2) Mary could not go to school because she was sick. =>Because of ______________________________________________ 3) Although the weather was bad, she went to school on time. => Despite ________________________________________________ 4) My mother told me to go to school although I was sick. => In spite of _______________________________________________. 5) Because there was a big storm, I stayed at home. => Because of _______________________________________________ 6) Tom was admitted to the university although his grades were bad. =>Despite __________________________________________________ 7) Although she has a physical handicap, she has become a successful woman. => Despite __________________________________________________ 8) In spite of his god salary, Tom gave up his job. => Although _________________________________________________ 9) Though he had not finished the paper, he went to sleep. => In spite of _________________________________________________ 10) In spite of the high prices, my daughter insists on going to the movies. => Even though ________________________________________________.

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