user-avatar
elenagreez125
2 năm trước
Đốt cháy hoàn toàn 20g nhôm (Al) trong không khí thu được 35g nhôm oxit(AL2O3).Biết rằng nhôm cháy là xảy ra phản ứng với khí Oxi (O2) trong không khí . a . Viết phương trình chữ của phản ứng . B. Viết công thức về khối lượng của phản ứng xảy ra C. Tính khối lượng của khí oxi đã phản ứng D. Lập PTHH của phản ứng Giúp vs
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Read the definitions and complete the blanks with given words. goggles court breaststroke stadium volleyball achievement skipping rope boxing tug of war referee No. Definitions Word 1. A sport in which two people fight each ________________ other with their hands, while wearing very large thick gloves 2. A game in which two teams of six ________________ players use their hands to hit a large ball backwards and forwards over a high net while trying not to let the ball touch the ground on their own side 3. A pair of glasses that fit closely to the ________________ face to protect the eyes from wind, dust, water, etc. 4. A thing that somebody has done ________________ successfully, especially using their own effort and skill 5. A style of swimming that you do on ________________ your front, moving your arms and legs away from your body and then back towards it in a circle 6. A place where games such as tennis ________________ are played 7. a type of sport in which two teams ________________ show their strength by pulling against each other at the opposite ends of a rope, and each team tries to pull the other over a line on the ground 8. A piece of rope, usually with a handle ________________ at each end, that you hold, turn over your head and then jump over, for fun or to keep fit 9. A large sports ground surrounded by ________________ rows of seats and usually other buildings 10. A person who is in charge of a sports ________________ game and who makes certain that the rules are followed

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team