cho a gam Fe tác dụng vừa đủ với 100ml dd hcl ( d=1,2g/ml) thu được dd và 6,72 l khí .cho toàn bộ lượng đ trên tác dụng với dd AgNO3 dư thu được b gam kết tủa tìm a,b giải chi tiết giúp em với ạ

Kết luận không đúng về vai trò của auxin A: Thúc đẩy sự phát triển của quả B: Kích thích sự hình thành và kéo dài rễ C: Tham gia vận động hướng động D: Thúc đẩy sự ra hoa

Cho tam giác ABC cân tại A có góc A =50° a/ Tính góc B , góc C b/ lấy D thuộc AB,E thuộc AC sao cho AD=AE . chứng minh tam giác DE// BC

Tác hại của ô nhiễm khói bụi, nước thải làm ô nhiễm môi trường

mng cm giúp mình 19->21 vs. m c ơn .

Read the passage and complete it by filling in the blank Read the following text and answer the questions by choosing the option A , B, C or D. The television set is an indispensable house item today. It now takes up its familiar place as the local point of the living room. The television set is one of the best ways to get the latest news to watch films. The television set was not only fully electronic when it was first invented. Its screen actually has a small motor and a small lamp. The picture was blurry and it was only about the size of a business card. It was only in 1953 in Europe when many people first started owning a television set. They bought a television set for the sole purpose of watching coronation of Queen Elizabeth II in London. Only a few thousand people were allowed into Westminster Abbey. Another significant event was the moon landing in 1969. Again, millions of people around the worlds watched as Neil Armstrong walked on the moon and planted an American flag. This time the event was broadcast in colour. The programme was much more realistic than previous ones. 1. Many people need the television set today as it. A. allows them to watch the coronation of Queen Elizabeth II B. enables them to find out what is happening around the world. C. is an electronic item. D. let them see things in colour. 2. Television sets in the past _________ A. were not so clear. B. were very bulky. C. ran on electricity. D. shoed pictures that were full coloured. 3. Why do you think the sales of television set rocketed in Europe in 1953? A. Television sets became more affordable. B. people wanted to watch the moon landing. C. People wanted to watch the crowning of the Queen. D. People wanted to watch live coverage of events around the world. 4. People around the world watched Neil Armstrong ____ 1969. A. travel to the moon B. sit on the moon C. put a flag on the moon D. take the American flag away from the moon. 5. From the passage, as television sets improved, ___. A. the colours on the screen lighter than before. B. more realistic programmes were shown C. people could watch events earlier than before. D. an event watched on TV looked more like actual event than that was happening. giúp mk vs mk đg cần gấp=((

happily rich pleased blood frightened married monster night hated money 1. Dracula lived in Transylvania, and at……….... he became a vampire. He drank …………as everyone knows. 2. Robin Hood lived in England. It's true that he took ………. from the ……….people and he gave it to the poor. 3. Dr Frankenstein created a …………., which was very ugly, and people were very ………..of it, they hated it. 4. Romeo and Juliet were very young when they fell in love. Their families…………each other. However, Romeo and Juliet were still in love and they got ………… secretly. Of course, their families weren't ………., they were angry. Romeo and Juliet didn't live …………forever. They committed suicide.

Giúp mình với đã có hướng dẫn và gợi ý rồi các bạn viết hoàn chỉnh hộ mình gấp

1. Cấu tạo đầy đủ của sánh có mấy phần? * A. 1 phần B. 2 phần C. 3 phần D. 4 phần 1. Cấu tạo của sánh " Ngón tay thon hình lá lúa" có mấy phần? * A. 1 phần B. 2 phần C. 3 phần D. 4 phần 3. Viết câu văn tả cảnh có so sánh? * 4. Tác dụng của so sánh là gì? * A. Gợi hình B. Gợi cảm C. Nhấn mạnh 5. Chép câu văn có sử dụng so sánh trong văn bản Sông nước Cà Mau? *

Mượn lời của chủ tàu người pháp để lại câu chuyện vua tàu thủy Bạch Thái Bưởi (ko sao chép mạng)