Cần thêm bao nhiêu ml nước vào 200ml dung dịch HCl có pH=1 để thu được dung dịch có H=2

hi mng.-. vẽ anime: vui bùn cáu luật:ko mạng,spam,tranh cũ

Nước nào không bị chiến tranh, ngoại xâm kể từ năm 1515? A. Thụy Sĩ B. Na Uy C. Ba Lan D. Mông Cổ

Nêu hai thao tác lập luận được sử dụng trong đoạn trích

Giúp mình bài này vớiạ .Cần gấp

IV. Fill in each blank with one appropriate preposition to complete each of the following sentences (1pt.) 1. She often shop…..groceries at the supermarket near her house. 2. He often helps his mother in the kitchen and …..other household tasks. 3. If you breathe….deeply, your lung can expand to twice their normal size. 4. It’s really hot in this room so I will put ….the air-conditioning. 5. Our museum was broken …..last Sunday and the most valuable picture was stolen. 6. The technique of acupuncture involves …. placing acupoints throughout the body. 7. The police have eliminated two suspects ……..their investigation 8. He's passionate ….the need to protect the environment. 8 9. The group is dedicated …..helping disabled people in Hanoi. 10. ….observing animals and plants, people can invent and design new products to serve humans.

Giúp mình vs ạaa Mình cần gấp lắmmmm

Viết câu hỏi theo kiểu pasive voice : 1.The cars was driven by Mark. 2.The plane was flown over the airfield. 3.Two bottles of coke and drunk by him every day. 4.No,flowers aren't picked by secretaries. 5.Yes, Material girl was sung by Madonna.

Vẽ-%)'×&&((π)($¶π%%÷)))÷%π%π Nốt câu này off thật luôn.-.

Nhờ anh chị giải chi tiết giúp em câu 5 với.