Gshsvhs

1 năm trước

Quan sát thí nghiệm + khi thả 1 đinh sắt sạch vào ống nghiệm đựng dung dịch CuSO4 + thả 1 mẫu nhỏ CaCO3 vào ống nghiệm chứa dd HCl + nhỏ vài giọt dd AgNO3 vào ống nghiệm có sẵn 1ml dd NaCl + Nhỏ từng giọt dung dịch CuSO4 vào ống nghiệm đựng dd NaOH + Viết PTHH nung vôi và điều chế oxi từ KClO3 hay KMnO4. Giúp mình với cần gấp ạ 🥺✨

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Thanh Trúc

1 năm trước

Xin chúc bạn học tốt và đạt nhiều điểm cao nha!!?

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Câu hỏi trong lớp Xem thêm

Supply correct form of the verbs . Those test (discrimination) unfairly against older people. - This film plays an (education) role of the community.

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2 đáp án

37 giây trước

Nguyên nhân bùng nổ, diễn biến chính và hậu quả của chiến tranh thế giới thứ nhất năm 1914 – 1918?

0 lượt xem

2 đáp án

2 phút trước

Giúp em với ạ em cần gấp $x^{2}$ + 5x = x$\sqrt{3x - 1 }$ + (x + 1)$\sqrt{5x}$

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1 đáp án

5 phút trước

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. It is often considered that the schoolyard is where bullies go to make other kids a miserable school life, but a new study suggests that classrooms are another popular place. The study, presented recently at the American Public Health Association's yearly meeting in Philadelphia, is based on the results of the research from more than 10,000 middle school students who answered questions online. Of those researched, 43% said they'd been physically bullied within the last month. A bit more than half said they had been laughed at in an unfriendly way, and half reported being called hurtful names. About one third said groups had excluded them to hurt their feelings. 28% said their belongings had been taken or broken; 21% said someone had threatened to hurt them. According to the results, two-thirds of the students said they had been bullied in more than one way over the previous month. The study authors mentioned that 8% of the students who answered said they had missed school at least once during the school year because of fear of being bullied. 25% said they had taken other actions, such as missing recess, not going to the bathroom or lunch, missing classes, or staying away from some area of the school to escape from experiencing a bully. Bullies did too much to the school life. 28. Bullies can happen in the following places EXCEPT_. A. schoolyards B. classrooms C. bathrooms D. teachers' offices 29. The underlined phrase ‘‘laughed at” in the passage is closest in meaning to_ A. made fun of B. smiled nicely C. shouted at D. looked after well 30. Which of the following might some students do to protect themselves from bullies? A. They miss school. B. They call their parents for help, C. They try to hurt others. D. They break others' belongings. 31. How does the writer feel about bullies at school? A. Excited B. Disappointed C. Worried D. Puzzled 32. Which of the following is probably the best title for the passage? A. Bad School Life B. Bullies at School C. Fear at School D. School Problems

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9 phút trước

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

351

351 lượt xem

1 đáp án

1 năm trước

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

271

271 lượt xem

1 đáp án

1 năm trước

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

257

257 lượt xem

1 đáp án

1 năm trước

1 câu trả lời

Supply correct form of the verbs . Those test (discrimination) unfairly against older people. - This film plays an (education) role of the community.

Nguyên nhân bùng nổ, diễn biến chính và hậu quả của chiến tranh thế giới thứ nhất năm 1914 – 1918?

Giúp em với ạ em cần gấp $x^{2}$ + 5x = x$\sqrt{3x - 1 }$ + (x + 1)$\sqrt{5x}$

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

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1 câu trả lời

Supply correct form of the verbs . Those test (discrimination) unfairly against older people. - This film plays an (education) role of the community.

Nguyên nhân bùng nổ, diễn biến chính và hậu quả của chiến tranh thế giới thứ nhất năm 1914 – 1918?

Giúp em với ạ em cần gấp $x^{2}$ + 5x = x$\sqrt{3x - 1 }$ + (x + 1)$\sqrt{5x}$

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.