Na20+............--------->NaOH CaO+Co2--------->................. So3+H2O--------->................. Bao+HCl--------->................. Co2+................--------->Na2Co3 Nhờ bạn giỏi Hoá giải dùm mình nha.

Bài: Hoàn thành câu với một trong những từ nối “although/ despite/however” sao cho thích hợp. 1.___despite___ the restaurant’s good reputation, the food was terrible. _although___ the restaurant has a good reputation, the food was terrible. The restaurant has a good reputation.___however__, the food was terrible. 2._______________ it didn’t stop raining, we didn’t cancel our picnic. _______________ the rain, , we didn’t cancel our picnic.It didn’t stop raining. We didn’t cancel our picnic,______________. 3.Mary still bought the watch, __________ it had a high price. Mary still bought the watch __________ its high price. The watch had a high price. Mary, ___________, bought it

Giúp mình làm bài 2c và giải thích Mình cảm ơn trước nha❤

Giúp mình với Mình sẽ vote cho tất cả các bạn

1 .Các số nguyên 3,-34,64,,-115,0,-86 sắp xếp theo thứ tự giảm dần 2. 7phần x =y phần -4 = 28 phần 8 ta có x,y lần lược là a. 2;56 b. 2;-14 c. -2;-56 d. -2,14

Dòng nào sau đây là cụm danh từ? (4 Điểm) Không muốn làm nữ hoàng. Đang nổi sóng mù mịt. Một lâu đài to lớn. Lại nổi cơn thịnh nộ.

Cho đoạn thẳng MN = 8cm. Lấy điểm A thuộc đoạn thẳng MN sao cho AM = 4cm. a) Tính độ dài đoạn thẳng AN. b) Gọi H là trung điểm của đoạn thẳng AN. Tính độ dài đoạn thẳng HN. c) Trên tia đối của tia AN lấy điểm E sao cho AE = 2cm. Chứng tỏ A là trung điểm của đoạn thẳng HE. giải chi tiết và vẽ hình nhé các bạn

Bài 1. (4 đ) Đưa các phương trình sau về dạng ax2+ bx + c = 0 và chỉ rõ các hệ số a, b, c a/ 3x^2+ x = 5 – x b/ 2x^2+ 5x – 2 căn 3=căn 3 x +1 c/ 4x^2 – 5x = 3 – 5x d/ x^2+ m = 2(m+1)x

Dựa vào bài Bức tranh của em gái tôi, hãy nêu diễn biến tâm trạng của người anh từ đầu đến khi nhìn bức tranh trong triển lãm.

Đang hok online khứu help me pls huhuhu a. have b. shall have c. will have had d. will be having While her husband was in the army, Janet________ to him twice a week. 1 điểm a. was writing b. wrote c. was written d. had written Her family________ to America since 1975. 1 điểm a. went b. have gone c. has gone d. would go We_______ English this time next Monday. 1 điểm a. learn b. will learn c. are learning d. will be learning By the age of 25, he _______ two famous novels. 1 điểm a. wrote b. writes c. has written d. had written Mục khác: When I arrived at the party, Martha________ home. * 1 điểm a. went b. has gone was going d. would go After you finish your work, you________ a break. 1 điểm a. have taken b. might have taken c. takes d. will take Mục khác: We_______ this course before the final examination. 1 điểm a. are going to finish b. have finished c. will finish d. will have finished Yesterday morning I got up and looked out of the window. The sun was shinning but the ground was very wet. It________ 1 điểm a. rained b. has been raining c. had rained d. had been raining This time last summer my family ........... a vacation in Ha Long Bay 1 điểm spend was spending spent had spent Look that those black clouds! It________ 1 điểm a. is going to rain b. will rain c. would rain d. can rain I couldn't cut the grass because the machine_______ a few days previously. 1 điểm a. broken down b. has been broken had broken down d. breaks down We ________English at this time last week. 1 điểm a. learned b. were learning c. have learned d. had learned Ask her to come ad see me when she _______ her work. * 1 điểm a. finishes b. finish c. finished d. finishing I shall be glad when he________ 1 điểm a. had gone b. did go c. went d. goes Oil _____ if you pour it on water 1 điểm a. floated b. floats c. will be floated d. float Henry_______ for 10 years 1 điểm a. has smoked b. was smoking c. had smoked d. had been smoking' Tùy chọn 1 Almost everyone_______ for home when we arrived. 1 điểm a. were leaving b. left c. leaves d. was leaving Is it raining? - No, it isn't but the ground is wet. It________ 1 điểm a. rained b. had rained c. has rained d. is raining That dancing club_______ north of the city 1 điểm a. lays b. lies c. locates d. lain