Giải thích các bước giải:
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tỷ lệ theo khối lượng của 2 đồng vị 27AL và 29AL là 23/2 ( số z=13). phần trăm theo khối lượng của 23AL trong phân tử AL2X3 là 33,05%, nguyên tử khối của x là bao nhiêu.
Mọi người ơi giúp e giải bài này với
Giúp mình với mình đang cần gấp
Giải hộ em 4 bài này với ạ , không cả 4 thì bài nào cũng được ạ . Em càn gấp . Ai giải hết em đánh giá 5 saoo cho ạ . Em Cảm ơn
Mấy bạn giải giúp mình 6 câu cuối vs ạ. Cảm ơn ạ, mình mới học nên chưa rõ lắm
Tui bị mất gốc toán hình 6,7,8 (cũng không hẳn) mấy bạn cho tui lời khuyên học những bài trọng tâm nào lên 9 có liên quan đi ạ
he wore warm clothes in oder not to catch cold( because)
Viết một bài văn tả mẹ . Help mik nha T^T . Hem chép mạng nha
bạn nào nhanh nhất thì được nè Tìm các từ Hán Việt, từ láy qua đoạn trích Kiều ở lầu Ngưng Bích ( Trích Truyện Kiều- Nguyễn Du)
1. Despite the pride they feel in their individuality, the British are not very individual in their tastes. Though_______________________________________________________________________ 2. In spite of not minding going to school, George would like more holidays. Even though ____________________________________________________________________ 3. The work was hard and the wages low. Even so he decided to take the job. Although____________________________________________________________________ 4. Although they are losing their reputation, they are gaining all the foreign markets. In spite of ___________________________________________________________________ 5. Although they possessed a big wealth in raw materials, The British had to import cotton. Despite______________________________________________________________ 6. Despite his concern about the children’s safety, nothing was done to free them. Although ___________________________________________________________________ 7. I couldn’t sleep although I was tired. In spite of____________________________________________________________________ 8. Although he’s got a German name, he is in fact French. Despite____________________________________________________________________ 9. I decided to accept the job although the salary was low. I decided to accept the job in spite of ____________________________________________ 10. Despite being the better team, we lost the match. ___________________________________________________________________,though 11. In spite of her injured foot, she managed to walk to the village. ___________________________________________________________________,though 2.Underline the adverbial phrase and write the question for the underlined. 1. We expect our grandparents to arrive in about an hour. ____________________________________________________________________________________ 2. My cousin watches television almost as much as you do. ____________________________________________________________________________________ 3. The weatherman says it will rain all day. ____________________________________________________________________________________ 4. Your brother plays soccer better than my brother does. ____________________________________________________________________________________ 5. Our friend drives on Mondays. ____________________________________________________________________________________ 6. Stacy and Nancy will walk on the sidewalk. ____________________________________________________________________________________ 7. The snake slithers through the tall grass. ____________________________________________________________________________________ 8. Mom combs my hair more gently than Dad does. ____________________________________________________________________________________ 9. He found his lucky penny in the morning. ____________________________________________________________________________________ 10. We raced our toy cars on the playground. ____________________________________________________________________________________ 11. Shayla and Coral were reading their books in the car. ____________________________________________________________________________________ 12. The music teacher played the piano better than her student. ____________________________________________________________________________________ 13. Jenny tried to talk to Peter underneath the water. ____________________________________________________________________________________ 14. Early in the morning the air is cold and fresh. ____________________________________________________________________________________ 15. Mom will pick us up after school is out. ____________________________________________________________________________________
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