2 pứ xảy ra cùng 1 lúc
`Fe^(2+)+2OH^(-)→Fe(OH)_2`
`Cu^(2+)+2OH^(-)→Cu(OH)_2`
Đáp án:
Giải thích các bước giải:
Phản ứng xảy ra cùng lúc
Fe2+ +OH- ->Fe(OH)2
Cu2+ +OH- ->Cu(OH)2
Làm giúp e từ câu g đến k với ạ, em cần gấp
he .....the dishes 11 o’clock
Vẽ đậu mầm cười lăn lóc NL: Đang tìm ảnh để chép tranh mà như vầy
chứng minh rằng nếu a^2+b^2=c^2 thì (ka)^2+(kb)^2=(kc)^2 a,b,c là số nguyên
đặt tính rồi tính a)3456+1234=? B)3544-2444=? giúp với
giúp mik khoanh 3 câu này với nha :3 Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions. Question 3. Peter_______ have lunch in the school canteen when he was in grade 6. A. used to B. was used to C. gets used to D. is used to Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of stress in each of the following questions.Question 14. A. agree B. open C. reduce D. return Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions. Question 7. We _______ each other at my aunt's house three years ago and _______ friends ever since. A. met/ had been B. met/ have been C. met/ are D. meet/ were *
1/2.(-3)/4.(-5)/8.(-8)/9 6/5+1/6:(-3) 7/8:5/4.(-10)/7
Giúp mình với ạ. Mình cảm ơn nhiều
Viết phân số sau thành phân số thập phân, có mẫu số là, $100$ $\dfrac{64}{800}$
Fill in the blank with correct forms of a suitable verbs (study, have, do, play) to complete the following sentences. 1. He is ……………………. hard at the moment 2. They ……………………... a beautiful home. 3. You can take the documents home and ……………………... them at your leisure. 4. He ……………………..…….. plenty of money but no style. 5. Jane ……………………..…….. the guitar and her brother is on percussion. 6. Nga is ……………………... to be an architect.7. Can I ……………………..… a drink of water? 8. Diane is ……………………..…….. anthropology at university. 9. I can’t go out tonight – I’ve got to ……………………..…….. my history paper. 10. Which team do you ……………………..…….. for?
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