user-avatar
pehang2520
2 năm trước
1: hòa tan hoàn toàn 32g hỗn hợp bột CuO và Fe2O3 cần 490g dd H2SO4 20% a) viết pthh b) tính% về Kl của mỗi oxit trong hỗn hợp c) tính nồng độ% của các chất có trong dd sau pư
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

giúp minhg với cần gấp vào chiều nay Use the correct form of the word in brackets to complete the following sentences. 1. He’s a really …………………………person. RELY 2. She made several excellent …………………………in her essay on Charles Dickens. OBSERVE 3. Watching TV shows in English is definitely very …………………………to improve your listening skills. USE 4. The Internet is probably one of the best …………………………ever. INVENT 5. The boat was 16 feet in …………………………. LONG 6. Both …………………………and fluency are important when speaking a foreign language. ACCURATE 7. You shouldn’t have said that! It was a totally …………………………remark. APPROPRIATE 8. Since the earliest times, civilisations have understood the …………………………of time. IMPORTANT 9. Doing puzzles keeps our brains fit and …………………………. HEALTH 10. As well as gaining …………………………, by doing puzzles we give our brains a good workout. SATISFY Find the errors and correct them. 1. The notebook lists every opportunities for handicapped workers in the area. 2. In the end, she quit the job because it was too bored. 3. Every candidate under considering for a federal job must undergo a thorough medical examination. 4. When I was a child, summers would be warmer and winters colder than now. 5. It took them at least two months learning how to pronounce these words.

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