Câu 19: Tìm dãy kết quả tất cả đúng về khối lượng(g) của những lượng chất(mol) sau: 0,25mol H2O, 1,75 mol NaCl, 2,5 mol HCl A. 4,5g H2¬O, 102,375g NaCl, 81,25g HCl B. 4,5g H2¬O, 92,375g NaCl, 91,25g HCl C. 5,5g H2¬O, 102,375g NaCl, 91,25g HCl D. 4,5g H2¬O, 102,375g NaCl, 91,25g HCl Câu 20: Tìm dãy kết quả tất cả đúng về khối lượng(g) của những lượng chất(mol) sau: 0,2 mol Cl, 0,1 mol N2, 0,75 mol Cu, 0,1 molO3 A. 7,1g Cl, 2,8g N2, 48g Cu, 3,2g O3 B. 7,1g Cl, 2,8g N2, 48g Cu, 4,8g O3 C. 7,1g Cl, 2,8g N2, 42g Cu, 3,2g O3 D. 7,1g Cl, 3,8g N2, 48g Cu, 3,2g O3 giải thích đầy đủ có phép tính cho 5 sao và tlhn

biết trung bình cộng bình cộng của bà số là 300, nếu số thứ ba là 200 thì trung bình cộng của hai số là bao hiêu

Giải giúp em vs ạ hứa vote 5 sao ạ

câu tục ngữ quân pháp bất vị thân thuộc chủ đề bài học nào trong chương trình giáo dục công dân

Hãy viết bài văn kể lại một trải nghiệm mùa hè ở quê

Giúp em với ạ! hứa cho 5sao, cảm ơn

Trả lời dùm đi ạ không là em bị cô chửi đấy ạ

Viết đoạn văn ngắn kể lại một trải nghiệm của em

I. Complete the following sentences by choosing the correct answer A, B, C or D. 26. _______ he kept everyone waiting made him rather unpopular. ​A. Due to​​B. That​​C. What​​D. Although 27. The hotel has a _______ friendly atmosphere, so it’s normally full of guests. ​A. disgusting​​B. depressing​​C. pleasant​​D. memorable 28. Donald Trumps _______ when he found out that people disagreed with him about his speech. ​A. hit the roof​​​​​B. saw pink elephants C. made my blood boil ​​​D. brought the house down 29. When the alarm went off, Jack just turned _______ and went back to sleep. ​A. down​​B. over​​​C. up​​​D. out 30. “Maria, I’d like you to meet John. He was a/an _______ at university. ​A. accompaniment​B. contemporary​C. twin​​​D. coincidence 31. Andy assured me that she was going to come, but she hasn’t _______ yet. ​A. turned to ​​B. turned at​​C. turned on​​D. turned up 32. Heart, blood, pump belong to _______ of the body. ​A. skeletal system​B. digestive system​C. nervous system​D. circulatory system 33. _______ my teacher’s advice, I wouldn’t have been successful in my project. ​A. On account of​B. Thanks to​​C. But for​​D. If not 34. By the time you come back next year, a new stadium _______ in our province. ​A. must have built​​​​B. will need being built​ ​C. will have been building​​​D. will have been built 35. ~ Jack: “Would you like tea or coffee?” ​~ Jill: “_____________.” ​A. I’d prefer coffee, please​​​B. I’d rather coffee, please ​ ​C. Thanks. The same to you​​​D. I’m glad you like it 36. How long have you been looking for _______? ​A. employee​​B. employer​​C. employment​D. employ 37. To _______ photography professionally requires a lot of skills. ​A. do​​​B. make​​C. commit​​D. carry 38. We made her an excellent offer, but she _______ it. ​A. turned​​B. rejected​​C. accepted​​D. denied 39. It must have been painful to him to stand there and watch his efforts going _______. ​A. down the drain​B. off the peg​​C. on the shelf​​D. off the old block 40. That old building is going to be _______ and a new library will be built in its place. ​A. pushed off​​B. pulled down​C. pushed in​​D. pull through 41. You are not allowed to bring coffee into the examination room, _______? ​A. do you​​B. aren’t you​​C. don’t you​​D. are you 42. When we met that day in Paris, I didn’t know that he was married _______ Barbara. ​A. with​​​B. to​​​C. in​​​D. of 43. He looked me _______ in the eye as though he hoped to draw something out of me. ​A. long​​​B. longly​​C. lengthy​​D. lengthily 44. He has decided to buy a _______ for his son on the boy’s twenty-first birthday. ​A. German sports posh​​​B. posh German sports​ C. posh sports German​​​D. German posh sports 45. It is cheaper to travel by air in _______. ​A. second-hand​B. style​​C. savings account​D. economy class Giúp mik vs

Giúp mik nha có mỗi 1 ý thôi Xét tính chẵn lẽ của hàm số