Cho HIK cân tại H biết góc H = 720 . Tính góc I , góc K. help

khi đun nước đã xảy ra những hình thức truyền nhiệt như thế nào

VI.Find the option (A, B, C, or D) that needs correctingand correct it 1. I have lived here since many years and I think it’s a nice town. A B C D 2. My father’s car is the same color like my uncle’s car. A B C D 3. Shall you close the window for me , please? A B C D 4. They used to crying at night when they were small. A B C D 5. My brother will pedal his monowheel to work at this time next week. A B C D 6. Will we travel by a flying car as a usual means of transport in the future? A B C D 7. There are less TV programs for teenagers than there are for adults. A B C D

Giúp mình bài 12,13 kẻ bảng rồi mới gọi rồi mới đưa ra pt ko đc gọi luôn ạ

MnO2 → Cl2 → KClO3 → KCl → HCl → Cl2

Giải giúp em ý D , E , F với ạ

Section III: Give the correct form of the words in brackets. 1. Then, Thanh.................a pan and stir-fried the beef. (Hot) 2. Sugar is not an......................food because we need it to live. (Health) 3. Catching the common cold is..................for every body. (Please) 4. I have.................time to play than my friend. (Little) 5. We enjoy living in a ............................ neighbourhood. (peace) 6. ………………….. is quite popular in an overcrowded city. You can see people sleeping in a park or under a brigde. (home) 7. The air in this city is very …………….. because there are many factories (pollute) 8. He used to drive ………….….so he had many accidents last year (care) 9. Critics were ……………………. at his performance as King Lear. (disappoint) 10. It was ______________ of you not to help him when he was in trouble. (kind) 11. When my father has free time he often tells us __________ stories. (fun) 12. Look! the children are eating ________________. (hungry) 13. It’s a nice shop and the assistants are all polite and very ___________ (help)

(3-×)(×+2)<0 tìm x Giúp em với

Tỷ khối lượng hỗn hợp SO2 và N2 so với H2=20. tính số phần trăm mỗi khí trong hỗn hợp

Cho phương trình (m+3)x^2+3(m-1)x+(m-1)(m+4)=0 a. Định m để phương trình có 2 nghiệm trái dấu b. Định m để phương trình có ít nhất 1 nghiệm âm