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Cau 68: Cac este thuong duoe dieu chè bang cách dun soi hon hop nào sau day khi co axit H SO4 dac lam xuc tac? D A. Phenol va axit cacboxylic. B. Ancol va axit cacbonyl. C. Phenol va axit cacbonyl. D. Ancol va axit cacboxylic. 相关知识点: 试题来源: 解析 D ...
Cau 47: Hon hop X gom Al2O3, MgO. Fe3O4. CuO. Cho khi CO du qu a X nung nóng duoe chát rǎn Y. Hò a tan Y vào dung dich NaOH du duoe dung dich Z và chát rǎn E. Chát rǎn E gom: A A. MgO. Fe. Cu. B. Mg, Fe, Cu. C. Fe. Cu. D. Al2O3...
QzpkQzIkQzpyUzMz03lpWUn5gA34QAZcVDwiIhoPDRUWhA92cIMfZrDD6zuNts9l8sM5XMM9juH2 9H55eL47O7oHc7AGYzCHra3d0tBsCouzsjKyh2qoRz2KoRy1taX1ynJdXVlVUT2QAz2IgRy0tKR0 SkJCMh0ZFZHCogARDAxjEENh0UAERoSEEqlUKGCA4eBSkUwiIpYDVBgYpbBoNJAiuVBkIIFEAmJy sUQioFBMJCYsoGQggeSCCYQioiKRYGBIkIDRgGRCRIIEjI...
JxahOP6 cxaRCGDKARvmWowXwUDNAoRoYQ0NjKhujJK2RAmgGEK0Q4+xNANvEQ4JkohIRGHbjO/5ToTEEtXh XOicQttyGGTMbFRzncv0uAI6dWOIb8toi2p2PUUGiPlM6Bm2bSoixmwUkuVIpZ+iQErym+zTTTzJ mGsI5nWsApKMbT7Cm3F2qBOzA4QrOOvzNs37sUtJjK7Nyxml5QC0EXkJxvuBUppZiygIulauPw8g nfwbAJK2mkKK9LRicC6gv5Dulf/jBaMXwQbj...
相关知识点: 试题来源: 解析 Am^2(x-2)+6=4x+m-6Phương trình có nghiệm duy nhất khim^2-4≠q0⇔m≠q±2Khi đó PT→∞=(2m^2+m-6)/(m^2-4)=(2m-3)/(m-2) 反馈 收藏
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