user-avatar
ngocminh.nhs
2 năm trước
Ở nhiệt độ 50oC độ tan của NH4Cl là 50g. Muốn có 300g dung dịch NH4Cl bão hoà ở nhiệt độ trên thì cần bao nhiêu gam muối NH4Cl và bao nhiêu gam nước
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

AI GIÚP EM VỚI Task 2: Read the passage again, and then decide whether the statements are true (T) or false (F). T F 1. Waste water from many factories which is dumped into water bodies directly causes water pollution. • • 2. Dumping waste directly into water is the most convenient way of disposing waste water. • • 3. Sulphur is believed the main reason for cancer. • • 4. Cancer villages occurred in 2004. • • 5. Due to lack of awareness, people poisoned water with dead poultry when there was bird flu outbreak in 2004. • • III)-Read the passage, and do the tasks that follow. Space Pollution The launch of Sputnik I and Yuri Gagarin, the first human being in space, marked the beginning of space exploration and the beginning of a new and unfamiliar type of pollution. Satellites, solar panels, rocket bodies and fragments from space shuttles that are floating in space and are no longer functional are considered space debris. This pollution of man-made objects in space affects us here on Earth as well and will continue to affect us in future travel. In 1978, the Soviet Union Kosmos 954, which contained a nuclear power source, reentered over Canada and left debris over an area the size of Austria. In 1969, five Japanese sailors were injured by pieces of space debris that hit their ship. The largest piece, weighing one thousand pounds, landed in Australia in 1979. Many solutions are being considered by scientists and engineers. However, the challenge to finding a solution lies within all of the nations which take part in the space exploration. Task 1: Match a word in column A with its definition in column B, writing the answer in each blank. Answer A B ______ 1. shuttle A. broken pieces of something larger ______ 2. functional B. made by people ______ 3. debris C. a vehicle in which people travel into space and pack again ______ 4. man-made D. a way of finding an answer to a problem ______ 5. solution E. working; being used Task 2: Read the passages again, and answer the questions. 1. What are some examples of space pollution? 2. What are the effects of space pollution? 3. What did Kosmos 954 cause to Canada? 4. Why were Japanese sailor injured in 1969? 5. Is it easy for all of the nations taking part in the space exploration to find solutions? E. WRITING Write a paragraph about noise pollution (definition, causes, effects, and solutions). 1. Noise pollution/ any loud sounds/ either harmful or annoying/ humans and animals. 2. Generally/ noise/ produced/ household appliances/ big trucks/ vehicles and motorbikes/ on the road/ planes and helicopters flying over cities/ load speakers, etc. 3. Noise pollution/ cause/ stress/ illnesses/ hearing loss/ sleep loss/ lost productivity. 4. Health effects/ noise/ include/ anxiety/ stress/ headaches/ irritability/ nervousness. 5. Noise-producing industries/ airports/ bus terminals/ should/ located/ far/ living places. 6. The officials/ check/ misuse/ loudspeakers/ outdoor parties and discos/ as well as/ public announcement systems.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team