Bài 1.Chỉ tui : Hoà tan 76,5g điphotpho pentaoxit vào nước thì thu được 500g dung dịch. Viết PTHH xảy ra. Tính nồng độ phần trăm của dung dịch thu đc sau phản ứng. Bài 2: Hoà tan hoàn toàn 3,9g Kali vaonước thì thu đc 500ml dung dịch .Viết PTHH xảy ra.Tính thể tích khí hidro thu được ở đktc .Tính nồng độ mol của dung dịch thu đc sau phản ứng

Giúp mình nhaa mình đánh giá 5 sao. Câu 5 đừng chép mạng nhé :<

sửa sai 5. Linh asked Bao whether he would visit his penpal when he has freetime. 6. Your friends went to your native village last weekend , weren’t they ? giải thích nhanhhhhhhhhhhh

Tóm tắt văn bản "Bánh chưng, bánh giầy" bằng sơ đồ

Task 5. Now write a similar paragraph to answer one of the following questions. 1. What do you think is the best leisure activity for teenagers? 2. Should parents decide how teenagers spend their free time? chọn 1 trong 2 câu hỏi trên đây nha , đoạn văn phải có : - in my opinion ( I believe) - Firstly , secondly , thirdly , finally , - For these reasons , In short , As I have noted

giúp mình với mình xin cảm ơn rất nhiều ạ

hãy nêu lên những sự việc tiêu biểu và các nhân vật quan trọng trong đoạn trích tức nước vỡ bờ , sau đó viết 1 đoạn văn bản tóm tắt lại đoạn trích ( khoảng 10 dòng )

Cứuuuuuuuuuuu giúp mik 2 bài này câu B thui ạ. Mik đag cần rất gấp :((

1.Her birthday is ....... Friday, August 20th. at on in by 2.She ( be) ........................ 14 on her next birthday. is will be am being 3.What's your ............................ color ? - I like blue most 4.The party will start ....... seven o'clock ...... the morning from/to in/on on/in at/in 5.The nineteenth of september. September 17th September 19th August 17th August 19th 6............ are you late ? - Because I missed the bus. What Why When How 7.My father / at 7.30 this morning/ will be free. 8.What is her .................. name ? Pham Thi Hoa last family full middle 9............ will we meet ? - In front of the school gate. Where When What How 10.You can find his telephone number in the ............................... home address telephone number telephone directory at home 11.They ( not go ) ....................... to the zoo very often. 12.He ( have ) ..................... a lot of friends soon. have is having has will have 13.What's your .................................? birth of day day of birth date of birth birth of date 14.When I am away from home, I ......... my family very much. love miss like hate 15.Her mother works hard .................... morning ................... night. 16.Alex often ( watch ) ............................. TV at night. watchs is watching will watch watches 17.What's your ...................? - 38 254 362 personal information telephone number telephone directory home address 18.............. is it from here to school? - About two kilometers. How far How high How long How often 19.Sarah looks after patients in hospital. She is a ....................... teacher nurse musician farmer 20.She does the housework everyday. She is a ...................... 21.I live ......... 162/10B Hoang Van Thu street. in on at by 22.your / classmate / Where / live / does ? 23.Sure. What time will it .......? - It'll start at 7.00. finish end go start 24.( you be) ........................ free next Sunday ? - No, I won't. 25............. awful restaurant! What What a What an What's 26.We are playing chess .............. the moment. by in on at 27.How ….is it from here to the nearest supermarket? – It's about 500 meters. far long difficult nice 28.The cakes are delicious. => What ...........................................................! 29.I ( come) ..................... back tomorrow. 30.Don't worry. I ( go ) ............... fishing with you next Saturday morning.

một vật rơi tự do. trong 4s cuối cùng rơi được 320m ( g=10m/s^2) thời gian rơi(đs;10s).vận tốc khi chạm đất( đs;100m).độ cao nơi thả ( đs;500m)