Hòa tan hoàn toàn m gam hỗn hợp X gồm Na, Ba, K2O và BaO (trong đó oxi chiếm 10% về khối lượng) vào nước, thu được 300 mL dung dịch Y và 0,336 lít khí H2 (đktc). Trung hòa 100 mL dung dịch Y cần 200 mL dung dịch gồm HCl 0,1M và HNO3 0,15M. Xác định giá trị của m.

Các câu hỏi liên quan

VI . Write the exclamations 1. This is a very comfortable room What ………………………………………………….! How…………………………………………………...! 2. These are modern computers What …………………………………………………..! How……………………………………………………! 3. She is an intelligent girl. What……………………………………………….! How………………………………………………..! 4. That student is excellent What………………………………………………...! How…………………………………………………! 5. He’s very friendly What…………………………………………………...! How……………………………………………………! 6. This book is very interesting. What…………………………………………………...! How……………………………………………………! 7. That bicycle is very old. What……………………………………………………! How………………………………………………….…! 8. This cake is very delicious. What……………………………………………………! How…………………………………………………….! 9.They are expensive dresses. What…………………………………………………....! How…………………………………………………….! 10. It is a good dishwasher what…………………………………………………….! How………………………………………………….…! 11. The movie is very interesting What…………………………………………………...! How……………………………………………………! 12, The bed is very comfortable. What………………………………………………..….! How……………………………………………………!