Một người thợ làm trong hai ngày, mỗi ngày làm 8 giờ thì được 112 sản phẩm. Hỏi người thợ đó làm trong 3 ngày, mỗi ngày làm 9 giờ thì được bao nhiêu sản phẩm cùng loại?

1.Cho 4,8g kim loại A hóa trị 2 tác dụng với 200g dd HCl vừa đủ thu đc 4,48l khí ở đktc a. xác định A b. tính C% khối lượng dd HCl đã dùng 2. cho 27g hỗn hợp Ba(OH)2 và Zn(OH)2 tác dụng vừa đủ với 200g dd H2SO4 nồng độ 9,8% a. viết PTHH b. TÍnh khối lượng mỗi Bazơ trong hỗn hợp ban đầu c. tính nồng độ phần trăm các chất trong dd thu đc

UNIT 1: LOCAL ENVIRONMENT GRADE 9 CHOOSE THE ANSWERS. ( PHRASAL VERBS) 1. He is trying to stop smoking. A. give off B. give up C. give in D. give away 2. The bomb exploded in the garage; fortunately no one hurt. A. put on B. went off C. got out D. kept up 3. I'm sorry. I didn't mean to interrupt you. Please, go on and finish what you were saying. A. talk B. quit C. continue D. stop 4. They decided to postpone their journey till the end of the month because of the epidemic. A. take up B. turn round C. put off D. do with 5. The bomb exploded in the garage; fortunately no one hurt. A. put on B. went off C. got out D. kept up 6. Be careful! The tree is going to fall. A. Look out B. Look up C. Look on D. Look after 7. They had to delay their trip because of the bad weather. A. get through B. put off C. keep up with D. go over 8. It took me a very long time to recover from the shock of her death. A. turn off B. take on C. get over D. keep up with 9. They decided to postpone their journey till the end of the month because of the epidemic. A. take up B. turn round C. put off D. do with 10. What may happen if John will not arrive in time? A. go along B. go out C. put on D. turn up 11. Frank never turns up on time for a meeting. A. calls B. arrives C. reports D. prepares 12. Never put off until tomorrow what you can do today.{p ut off: postpone: delay} A. do B. let C. delay D. leave 13. My father gave up smoking two years ago. A. liked B. continued C. stopped D. enjoyed 14. Both Ann and her sister look like her mother. A. take after B. take place C. take away D. take on 15. I’ll be back in a minute, Jane. I just want to try out my new tape recorder. A. resemble B. test C. arrive D. buy 16. He resembles his father in many ways. A. turns off B. takes on C. goes over D. takes after 17. We’ll buy you a cat, but you must promise to take care of it properly. A. put on B. go off C. take after D. look after 18. *Johnny sometimes visits his grandparents in the countryside. A. calls on B. keeps off C. takes in D. goes up 19. *Did your son pass the university entrance examination? A. make up B. get along C. go up D. get through 20. He did not particularly want to play any competitive sport. A. use up B. do with C. take up D. go on 21. I am tired because I went to bed late last night. A. stayed up B. kept off C. put out D. brought up 22. The small white flowers are my favorite. They give off a wonderful honey smell that scents the entire garden. A. release B. stop C. end D. me 23. I felt let down when I didn't receive a birthday card from my sister. A. disappointed B. interested C. excited D. bored 24. Do you have to light up another cigarette? I thought you were trying to cut down. A. burn B. illuminate C. save D. smoke 25. I couldn't make out what he had talked about because I was not used to his accent. A. stand B. understand C. write D. interrupt 26. The firefighters fought the blaze while the crowd was looking on it. A. blowing B. watering C. preventing D. watching 27. The police are looking into the murder. A. redoing B. investigating C. doing D. ignoring 28. Within their home country, National Red Cross and Red Crescent societies assume the duties and responsibilities of a national relief society. A. take on B. get off C. go about D. put in 29. Giovanna doesn't get along with her two brothers. A. agree with B. hate C. please with D. have a good relationship with 30. You don't need a computer. You can get by with the typewriter. A. understand B. manage with C. buy D. pass with

Giúp mik nhé :))) cố gắng giúp mik với

Giúp mình với nhé mình cảm ơn trước bạn nào trả lời nhanh nhất mình vote 5 sao !!!

2/3 của 30 là gì ? Mình xin cảm ơn

Một người dự định đạp xe đi từ A->B trg một thời gian qui định với vận tốc 15 km/h.Đi được nửa quãng đường,người đó nghỉ 30 p .Do sợ muộn nên người đó đã tăng vận tốc lên 5km/h nhưng lại đến B sớm 5 phút .Tính quãng đường AB

Mình sắp phải nộp cô rùi ạ, làm nhanh giúp mình nhé!

Mình đang cần gấp, nhanh giúp mình nhé ạ!

giúp mình câu này với ạ . Cho dòng điện có cường độ 3 A chạy qua bình điện phân đựng dung dịch CuSO4 có cực dương bằng đồng trong thời gian 16 phút 5 giây. Khối lượng đồng giải phóng ra ở cực âm là bao nhiêu?