Fe2O3 + 3H2 -----> Fe + H2O ( bạn nhớ ghi nhiệt độ ở dấu mũi tên suy ra )
nFe2O3 = m/M = 16/160 = 0,1( mo l)
=> nH2 = 3. nFe2O3 = 3 x 0,1 = 0,3( mol )
=> VH2 = n x 22,4 = 0,3 x 22,4 = 6,72( l )
Chúc bạn thi tốt ^^
Đáp án:
Giải thích các bước giải:
làm giúp mik ạ môn tin học trong scratch nhen
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Câu 1: Thông tin là gi? Có mấy dạng thông tin cơ bản? Đó là những dạng nào? Câu 2. Cấu trúc chung của máy tính điện tử theo Von Neumann gồm các khối chức năng nào? Bộ phận nào được coi là bộ não của máy tính? Tại sao? Câu 4. Hãy nêu một số khả năng của máy tính hiện nay? câu 5: Quá trình 3 bước cho ví dụ cụ thể trong thực tế cuộc sống M.n giúp em với đc ko ạ
Làm cách nào virút có thể lây lan từ tế bào thực vật này sang tế bào thực vật kia
Make sentences, using the words given: (đặt câu sử dụng những từ cho sẵn) 1. Tan and Ba/ play tennis now. 2. She/ do aerobics at the moment. 3. Linh/ skip rope now. 4. My father/ jog/ every day. 5. She/ often/ do aerobics. 6. Nam/ sometimes/ play table tennis. 7. Look ! The boy/ read a book. 8. Son Hai/ write a letter now. 9. His friends/ play soccer/ every Sunday. 10. I/ swim/ every afternoon. 11. They/ play/ soccer/garden/ at the moment. 12. Nam/ play/ video game/ twice a week. 13. It/ hot/ summer/ but/ cold/ winter. 14. She/ like/ cool/ weather/ not like/ hot/ weather. 15. What/ weather/ like/ summer? 16. She/ go jogging/ morning.
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