Cho 2 dung dịch h2so4 A và B có C% theo thứ tự là 50% và 20%. Trộn 2 dung dịch này lại với nhau theo tỉ lệ về khối lượng là 3:7 được dung dịch Y. Xác định C% của dung dịch Y Giúp mình bài này với, dạng này lạ quá ㅠㅠ

Calli : Bỏ đi :) _______Tone lạnh______

Làm hộ mik bài 1 và bài 2,mik cảm ơn ạ

So sánh : A với 1 A = 1/1.2 + 1/2.3 = 1/3/4 +...+1/49.50 gấp

Task 4. Combine these pairs of sentences using "too ....to" 1. The bag was very heavy. She couldn't carry it. ........ 2. He is very old. He can't run. ........ 3. She is very young. She can't go to school. ........ 4. Tom is very short. He can't play volleyball. ........ 5. It's very late. We can't go to the movies. ........ 6. The question was very hard. We couldn't answer it. ........ 7. The TV program is very exciting. The children won't miss it. ........ 8. You're very young. You can't drive that car. ........ 9. She was tired. She didn't go anywhere. ........ 10. These shoes are very small. I can't wear them. ........

Đang cần gấp ai giúp mình với ạ

Task 3. Combine these pairs of sentences using "so……..that" 1. That woman was very tall. She could almost touch the ceiling. ........ 2. This coat is very big. I can't wear it. ........ 3. The coffee was so strong. She couldn't go to sleep. ........ 4. That bag was very heavy. None of us could carry it. ........ 5. The stadium is very large. It can hold 60,000 people. ........ 6. Those lessons are very difficult. He can't understand them. ........ 7. She was very busy. She couldn't do the housework. ........ 8. The climate was very bad. All the plants couldn't grow well. ........ 9. I'm very tired. I couldn't keep my eyes open. ........ 10. That boy is very lazy. He never does his homework. ........

MN lm nhanh giúp em 2 bài này với ạ

Giúp mik đi hứa cho ctlhn Cho biết 4 x 552 : (x + 0,75) = 1,84 . Hãy tìm cách để đặt thêm một dấu phẩy vào chỗ nào đó trong đẳng thức trên để giá trị của x giảm 297 đơn vị .

Chỉ mik calli 5 chữ đầu tiên là a,b,c,d,e giống kiểu pic dưới