Nguyên Tố Nào Có Nguyên Tử Khối Là 32 đvC? | Cungthi.online

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• Nguyên tố nào có nguyên tử khối là 32 đvC?

Câu 1:

Nguyên tố nào có nguyên tử khối là 32 đvC?

A.

Oxi

B.

Cacbon

C.

Lưu huỳnh

Feedback Lưu huỳnh có nguyên tử khối là 32 đvCD.

Nhôm

Những câu hỏi này đến từ bài kiểm tra này. Bạn có muốn thực hiện bài kiểm tra thử không?

Trắc nghiệm Hóa học lớp 8 - Chất - Nguyên tử - Phân tử - Đề số 2

• 20 phút
• 10 câu hỏi

Làm bài kiểm tra

Một số câu hỏi từ cùng một bài kiểm tra

• Trong các chất dưới đây có mấy đơn chất: Cu, FeO, , CaO, Na, Ba, ZnO, CO, Mg.

• Oxit là

• Những nguyên tố tạo nên Canxi cacbonat có trong vỏ trứng là:

• Hạt nhân nguyên tử cấu tạo bởi:

• Hạt nhân nguyên tử cấu tạo bởi:

• Phân tử khối của CuO là

• Hợp chất $(NH_{2})_{x}CO$ có phân tử khối là 60 đvC. Giá trị của x là

• Trong công thức hóa học CuO, Cu có hóa trị bằng bao nhiêu

• Nguyên tố nào có nguyên tử khối là 32 đvC?

• Khi làm thí nghiệm, dùng kẹp để cặp ống nghiệm, người ta thường kẹp ở vị trí nào trên thân ống nghiệm?

Một số câu hỏi khác bạn có thể quan tâm

• Viết các phương trình hóa học sau:

  a) CH3COOC2H5 + H2O

  b) C12H22O11 (saccarozo) + Cu(OH)2 →

  c) Anilin + HCl →

  d) Trùng hợp acrilonitrin.

• Cơ quan nào có thẩm quyền tiếp nhận hồ sơ dự án đầu tư:

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

  ROBOTS

  Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine (15) _______ would do all the necessary jobs around the house. If boring and repetitive factory work could be (16) _______ by robots, why not boring and repetitive household chores too?

  For a long time the only people who really gave the problem their attention were amateur inventors. And they came up against a major difficulty. That is, housework is actually very complex. It has never been one job, it has always been many. A factory robot (17) _______ one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot, on the other hand, has to do several different types of cleaning and carrying jobs and also has to cope (18) _______ all the different shapes and positions of rooms, furniture, ornaments, cats and dogs. (19) _______, there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the software- the programs that will operate the machine.Điền vào ô 17.

• Japanese initially used jeweled objects to decorate swords and ceremonial items.

• Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 36 to 40.

  From a very early age, it was apparent that Magnus Carlen was a brilliant chess player. By the age of 13, Magnus was (36) __________ to be one of the best chess players in the world, and his parents wanted him to reach his full potential as a professional chess player.

  This meant their son had to develop a lifestyle of strict (37) _________ which included many hours of practice. Only this way could he become a world champion. (38) _________ Magnus's parents supported him, they did not want him to devote his whole life to chess. They felt that if he focused only on chess, he would suffer both physically and emotionally. They made it clear to him that thay had no intention of letting their son drop out of school. He was also encouraged to follow his interest in sports. As a result of his (39)________, when Magnus graduated from high school in 2009, he was not only the best chess player in the world, but he was also awarded the title of "sport-student of the year" for his achievements in snowboarding and golf.

  Today, Magnus gives credit to his parents for the way they raised him. They set rules, but they never (40)________ with his ambitions. Instead they gave him the support and encouragement he needed to achieve his goals and still be a happy young man.

  They set rules, but they never (40)________ with his ambitions.

• Trong dao động cơ học, khi nói về vật dao động cưỡng bức (giai đoạn đã ổn định), phát biểu nào sau đây là đúng?