user-avatar
ngaotuong
2 năm trước
Cho 19g hỗn hợp Na 2 CO 3 , NaHCO 3 tác dụng vừa đủ với 100g dd HCl rồi dẫn khí sinh ra lội qua dd Ba(OH) 2 lấy dư được 39,4g kết tủa trắng. a. Tính khối lượng mỗi chất trong hỗn hợp đầu. b. Tính nồng độ % của dd HCl cần dùng.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Tìm lỗi sai và sửa lại 1. My brother wishes he could speak English fluent . 2. The teacher asked me why was I learning English . 3. She wishes she is the most beautiful girl in the world. 4. A new shop is opened on Tran Phu street last week. 5. Hoa is used to live in the countryside . 6. She said him if he was born in 1945 7. I wish I have time and money to travel around the world. 8.A new style of uniform has just be introduced in our school 9.Uncle Tom said that he would go to Nha Trang tomorrow. 10. She wishes she is the most beautiful girl in the world. 11. I asked them if they teach other foreign languages besides English. 12. Minh said that he is learning English in an evening class. 13. I wish I have time and money to travel around the world. 14. Lan said that she will be a teacher someday 15. It’s raining , because we can’t go out. 16. Mr Van wishes that he has a radio to listen to the news. 17. A new style of uniform has just introduced in our school. 18. I got up late this morning, that I didn’t have time for breakfast 19. They used to visiting to DaLat in summer when they were young.

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