user-avatar
phuongthaonc90
2 năm trước
Kim loại Al khử N+5 của HNO3 thành N-3. Số phân tử HNO3 đã không bị khử trong phản ứng khi cân bằng là:
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

SENTENCE TRANSFORMATION: 1/ I never saw he sharks before. ⇒ This is......................................................... 2/ Liz thought no fish was more beautiful than the colorful little fish. ⇒ The most.................................................... 3/ We took a train to HCM city. ⇒ We got to.................................................... 4/ How long was your flight from Ha Noi to Jakarta? ⇒ How long did..............................................? 5/ We live too far away from our school. ⇒ We don't live............................................... 6/ Their father got to London by taxi last Monday. ⇒ Their father took a..................................... 7/ Be sure to lock the door before you leave. ⇒ Don't............................................................ 8/ How much is this dictionary? ⇒ How much does......................................... 9/ These books cost twenty-eight thousand dong ⇒ These books................................................ 10/ Minh saw a lot of gifts in a souvenir shop. ⇒ There............................................................ 11/ Mrs. Mai bought Chi a cap last week. ⇒ Mrs. Mai....................................................... 12/ What is the distance between Hue and Da Nang? ⇒ How..............................................................? 13/ He went from Vung Tau to Ha Noi for about 2 days by train. ⇒ It.................................................................... 14/ This hamburger costs ten thousand dong ⇒ It is................................................................ 15/ The building has five floors ⇒ It is................................................................ 16/ Our summer vacation lasts for two months ⇒ We have....................................................... 17/ This is the first time Liz saw the sharks. ⇒ Liz never...................................................... 18/ Will you please look after the house while we're away? ⇒ Will you please take................................... 19/ It isn't important for you to finish the work today, ⇒ You don't..................................................... 20/ I get to school in half an hour. ⇒ It takes.........................................................

VOCABULARY AND GRAMMAR I. Match a word in column A with its description in column B, writing the answer in each blank. Answer A B ______ 1. A thunderstorm A. It is created when the surface layer of the ground collapses. It varies in size and are found all over the world. It is an area of ground that has no natural external surface drainage. When it rains, all of the water stays inside it and typically drains into the subsurface. It can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep. ______ 2. A tornado B. The Earth has a crust under the oceans and the land that we live on. This crust made of massive areas of flat rock called tectonic plates, which float on the Earth’s mantle, the inside layer of the Earth. When the plates move slowly together, this movement forces energy through the crusts to the Earth’s surface. The energy causes the Earth to tremble and shake. ______ 3. A hurricane C. It is a very bright flash of electricity that happens in a thunderstorm. It is actually a spark that crosses the gap between two clouds or between a cloud and the Earth. It carries an enormous charge of electricity. Trees are burned, metal can be melted and people can be killed. ______ 4. An earthquake D.It is caused by earthquakes at sea. It forms when energy from an earthquake displace hundreds of cubic kilometers of water from the seabed. Large waves begin moving through the ocean from their epicenters. When it reaches shallow water near coastal areas, it increases in height. The sign comes before it strikes when the waterline suddenly retreats, exposing hundreds of meters of beach and seabed. ______ 5. A volcano E. It is a very violent windstorm. The air is concentrated and whirls up rapidly. It is grey in colour and looks like an elephant’s trunk swaying down from the clouds to touch the ground with its tip. ______ 6. A tsunami F. It is a hill or mountain formed when molten material or lave from the inside of the Earth is forced through the Earth’s crust by gases. It can produce vast clouds of very fine volcanic dust which looks like smoke. ______ 7. A sinkhole G. It is a storm where you hear thunder and see lightning. There is usually heavy rain. It is an electric storm. ______ 8. Lightning H. It is the most violent storm known on Earth. It is a tropical storm. It forms at sea and causes dangerous, stormy seas. It can reach the land and destroy buildings and trees. It can blow high waves onto the land and cause flooding. II. Complete each sentences with the correct word from the box. drought flood hurricane landslide tornado 1. When there is a ___________, a lot of water covers an area where there usually isn’t water. 2. A ___________ refers to a long time without rain. 3. When there is a ______________, a lot of rocks and earth fall down a hill. 4. A____________ is a storm with a lot of wind that moves over water. 5. A____________ is a storm in which the air moves very quickly in a circle. III. Use the verbs in the box in the correct form to complete the sentences. bury evacuate rage take recover scatter provide suffer 1. The government _____________ health and other services to the affected regions. 2. Action were _____________ to limit the effects of the floods in Quang Ninh. 3. The Red Cross helped homeless families to ____________ from the disaster through the project. 4. The majority of concerned areas have ___________ from cholera epidemics after the floods and landslides in Central America. 5. Early September, mudslides caused by heavy rains _____________ an entire village of 480 inhabitants. 6. Thousands of villagers ____________ from flood-prone areas after the warnings from the weather bureau. 7. Tiny particles of dust, smoke, salt or pollution droplets that ___________ through the air to cause haze. 8. The fires ____________ for more than a week in the southern region of Chile, which has been hit by a severe drought. Giúp mình với ạ, chiều nat mình nộp rồi 😭

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