Đốt cháy hoàn toàn 3,36l hỗn hợp khí A gồm CH4 và C2H4 thu được VCO2 – VH2O = 2,24 (l) (các khí đo ở đktc). a) Tính thành phần % khối lượng của mỗi khí trong A. b) Dẫn hỗn hợp A qua dung dịch Br2 dư. Tính khối lượng brom phản ứng.

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Use the given words to write the complete sentences. 1. There/ nothing more appetizing/ smell of meat sizzling over an open fire. _________________________________________________________________ 2. Some people/ eat barbecue/ because/ it/ let/ together with friends or family/make/ feel more sociable. _________________________________________________________________ 3. People often/ barbecue/ national holidays/ special occasions/ birthday/ family gathering. _________________________________________________________________ 4. In the United States, it/ tradition/ have a barbecue/ hamburgers and hot dogs/ Independence Day, July 4th. _________________________________________________________________ 5. If you/ chance to visit/ different places/ world, you/ try/ local specialities. _________________________________________________________________ 6. There/ any good restaurants/ that town/ we/ decide/ take/ sandwiches for the trip. _________________________________________________________________ 7. We'd like/ stay longer/ try local dishes, but we/ not have/ time. _________________________________________________________________ 8. He/ learn to become/ good cook/ big restaurants and hotels/ if/ he/ try/ hard. _________________________________________________________________ 9. We/ have/ fish? This restaurant/ most famous for it/ this town. _________________________________________________________________ 10. If she/ like/ eat spicy food/ she/ add chilli. _________________________________________________________________