kết quả phân tích nguyên tố cho thấy limonen được cấu tạo từ 2 nguyên tố C và H trong đó C chiếm 88,235% về khối lượng . Tỉ khối hơi của limonen so với không khí gần bằng 4,69 . Lập công thức phân tử của limonen

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Combine each pair of sentences using a relative pronoun or relative adverb. 1. She is the most intelligent woman. I’ve ever met this woman. .......................................................................................................................................... 2. This doctor is famous. You visited him yesterday. .......................................................................................................................................... 3. These children are orphans. She is taking care of these children. .......................................................................................................................................... 4. The two young men are not good persons. You are acquainted with them. .......................................................................................................................................... 5. My father goes swimming every day. You met him this morning. .......................................................................................................................................... 6. I thanked the woman. This woman had helped me. .......................................................................................................................................... 7. The man is my father. I respect his opinion most. .......................................................................................................................................... 8. Mary and Margaret are twins. You met them yesterday. .......................................................................................................................................... 9. I’ll introduce you to the man. His support is necessary for your project. .......................................................................................................................................... 10. The middle-aged man is the director. My father is talking to him. ..........................................................................................................................................