Để hoà tan hết hỗn hợp gồm 600g MgO và 16,0g Fe2O3 cần dùng Và lít dung dịch HCL 2M . Tính V =?

Câu 1: Trong phần mềm Logo câu lệnh nào sau đây là đúng? A. Repeat 6 [fd 100; rt 60] B. Repeat 6[ fd 100 rt 360/6] C. Repeat 6{ fd 100 rt 360/6} D. Repeat 6< fd 100 rt 60> Câu 2: Trong phần mềm PowerPoint để tạo hiệu ứng cho văn bản trong trang trình chiếu em chọn thẻ? A. Animations B. Insert C. Home D. Design Câu 3: Trong phần mềm Logo, để thực hiện phép tính (10 + 5) : 5 + 2 x 5, em gõ lệnh: A. Print (10 + 5) : 5 + 2 x 5 B. Label (10 + 5) : 5 + 2 x 5 C. Label 10 + 5 / 5 + 2 * 5 D. Print (10 + 5) / 5 + 2 * 5

tìm hai phân số biết tổng của chúng bằng 5/6 và hiệu của chúng bằng 1/6

cho a , b , c , d khác 0 và a/b = c/d C/ M R : 2a -5b/3a = 2c-5d/3c

Trả lời và giải thích vì sao lại điền như vậy. Mình sẽ vote 5 sao ạ.

tính nhanh 12 +17 + 14 + 13 +16 +18 giúp em với nhanh lên nhé

1. In all the world, there (be) __________ only 14 mountains that (reach) __________above 8,000 meters. 2. He sometimes (come) __________ to see his parents. 3. When I (come) __________, she (leave) __________for Dalat ten minutes ago. 4. My grandfather never (fly) __________ in an airplane, and he has no intention of ever doing so. 5. We just (decide) __________ that we (undertake) ____________ the job. 6. He told me that he (take) __________ a trip to California the following week. 7. I knew that this road (be) __________ too narrow. 8. Right now I (attend) __________ class. Yesterday at this time I (attend) __________class. 9. Tomorrow I'm going to leave for home. When I (arrive) __________at the airport, Mary (wait) __________ for me. 10. Margaret was born in 1950. By last year, she (live) __________on this earth for 55 years. 11. The traffic was very heavy. By the time I (get) __________to Mary's party, everyone already (arrive) __________ 12. I will graduate in June. I (see) __________ you in July. By the time I (see) __________ you, I (graduate) __________. 13. I (visit) __________ my uncle's home regularly when I (be) __________ a child. 14. That book (be) __________ on the table for weeks. You (not read) __________ it yet? 15. ADavid (wash) __________ his hands. He just (repair) __________ the TV set. 16. You (be) __________here before? Yes, I (spend) __________ my holidays here last year. 17. We never (meet) __________ him. We don't know what he (look) __________ like. 18. The car (be) __________ ready for him by the time he (come) __________tomorrow ĐÁP ÁN : 1. are - reach 2. comes 3. came - had left 4. has never flown 5. have just decided -would undertake 6. would take 7. was 8. am attending - was attending 9. arrive - will be waiting 10. had lived 11. Got - had already arrived 12. will see - see - will have graduated 13. visited - was 14. has been - haven’t you read 15. is washing - has just repaired 16. Have you been - spent 17. have never met - looks 18. will have been- comes NHỜ MỌI NGƯỜI GIẢI THÍCH GIÚP EM VÌ SAO LẠI CHIA NHƯ THẾ Ạ ? EM CẢM ƠN

Cho 16g MgO. Hãy tính số phân tử. Cần phải lấy bao nhiêu g CuO để để có số phân tử gấp 2 lần số phân tử MgO nói trên.

Mọi người làm hết giúp mình với

Combine these sentences, using relative pronouns in bracket . This woman is my close friend. She comes from Italy. ( who ) Giúp mình nhóe -.-