化學 高中 約3小時以前 想詢問KMnO4的反應式要如何選擇? 不能用直線畫起來的那個式子嗎? 例題 1 2+ 氧化還原滴定 滴定 30.0 毫升 Sn² 酸性溶液,達滴定終點時共消耗了10.0 毫升 KMnO溶液 (0.120M),此時溶液中 Sn²+之起始濃度為何? (A) 0.100M (B) 0.200M (C) 0.360M (D)0.900M。 A - +6 -8 2- MnO4 x KMnO4+5e-Mn² 2+ 0.0012 = 2 mole mode=0.0006 0.003 .0.1 10.03 +1+7-8 KMnO4 + e mol 6.12 = 0.01 +7 +2 0.03 mul = 0.0012 c.00 12 × 5 :0.003 2 Ans : (B) (A) 竹下2+酸性溶液可 四十 10-0006 已解決 回答數: 1
數學 高中 約6小時以前 請問第15題怎麼解? 15. Z 6 直線 5=2121-22 号: 2551-22 所夾的銳角平分線方程式為千=3=2 2 -3 16. 設 O - xyz 空間中,兩點 4(1,-2,-1),B(3,1,0),一平面 E:x-y-z-1=0,則 (1) AB在E的正射影的長度為 已解決 回答數: 1
化學 高中 約17小時以前 化學判斷氫鍵形成的問題。為什麼b選項不會形成氫鍵? "BUR" 四氯化碳、丙酮(化學式:CH "ABC" 問哪些試劑會與水完金混合均匀? 極、氫 (A)汽油 (B)酒精 (C)旦氧甲烷(D)四氯化碳 (E) 132122 Cal 極微溶 18. 下列哪些物質具有分子內之氫鍵? ◎ 非選題 ✓(A) NO₂ L(B) 非 ENOCH, OH N-9 M \(C) OH OH OH C-H H 19. 下列有關物質各項性質的比較,請寫出其由高至低的啊 (1) tên là: C,H,O,C,H, Si • Mg • Si7 Mg 淋上 、 。 Si>Mg HE>HIN H 已解決 回答數: 1
英文 國中 約18小時以前 想請問一下大家 為什麼第四題不能選A 還有what的用法是什麼時候用 第五冊單元14 第5~6 會考隨堂做 3. The song is sung by Jolin, (A) one I think (A) that (B) who (C) that is one of the most famous singers in Taiwan. (D) which he was trying to tell you was that he would never give up on you. (B) which (C) who (D) what father is a doctor. (B) whose (C) that (D) which 5. Kate wants to know the man (A) who B 關係子句(形容詞子句)★★★☆☆ 同形容詞片語,須緊跟在先行詞之後;其用法有二: 關係子句 例句 尚未解決 回答數: 1
英文 國中 約18小時以前 求解🙏🏻🙏🏻 連線 Everyone looked (A) surprise when the man's mask was pulled off. (B) surprised (C) surprises (D) surprisingly 尚未解決 回答數: 1
英文 國中 約18小時以前 想問C 感恩 The news shocked them. They never knew it would happen (選對的) (A) They were shocked at the news. shock (B) They were surprising to the news.. At the news (C) The news was shocked at them. (D) The news was surprising with them. 演学的答。 尚未解決 回答數: 1
數學 高中 約18小時以前 想請問第十題的解法 謝謝 10.有6個球投入4個箱子中,求下列投入法各多少種? (1)球相同,箱子相同,每箱投入球數不限。答: E E (2)球不同,箱子不同,每箱投入球數不限。答: (3)球相同,箱子不同,每箱投入球數不限。答: (4)球相同,箱子不同,每箱至少投入一球。答: (5)球不同,箱子不同,每箱至少投入一球。答: 9. 4096 84/ 10/ 1560 球挑 6挑4 。 。 。 尚未解決 回答數: 1
英文 國中 約18小時以前 2.是用背的嗎?還是怎麼理解 6.完全看不懂rrr 12.為什麼用interest CD (C) does I believe there are many students who got troubled with math.AG (A) trouble K esuq (B) troubles A got / be Troubled (C) troubled (D) troubling 3. That was a UIDE TO movie, and all of us were by *() 13. 尚未解決 回答數: 2
英文 國中 約19小時以前 第41題為什麼不能選B?? (39~41) 1 Magic Blade Does the water on the floor after taking a shower give you a headache? No worries anymore. With a Magic Blade in hand, you can easily sweep the water away and keep the floor dry and clean. No need to change to another pair of plastic slippers when you step into the bathroom. What's more, a dry floor is safer for old people at home. It is less likely for them to fall down in the bathroom. What are you waiting for? Pick up your smartphone and click the website below. We can send the Magic Blade to your look house in 2 days. Click here www.magicblade.com Magic Cleth Find a lot of hair on the floor? For a busy mother with daughters with long hair, it is not a good idea to sweep the floor every day. We know you are too tired of it. Now, here comes our Magic Cloth. You just need to put it on the floor and draw some circles on the floor. Now, all the hair is cleaned away with the Magic Cloth. If you have dogs or cats at home, the Magic Cloth is also useful for you. Take out your smartphone and make a call to us. We will send the Magic Cloth to you in 2 days. Twelve pieces of Magic Cloth in a box only cost you NT$99. Buy two boxes and get one box free. Magic Cloth: 02 2233-XXXXX 39. Who are the two ads mainly for? (A) Doctors. (C) Old people at home. 40 What does Magic Blade look like? (B) Housewives. (D) Cat lovers and dog lovers. □ mainly 主要地 (A) (B) (D) 41. What can we know from the two ads? (A) A Magic Blade is cheaper than three boxes of Magic Cloth. (B) Both of the Magic Blade and the Magic Cloth can be bought online. (C) You can get 20% off if you buy a Magic Blade and two boxes of Magic Cloth. (D) If you place an order for Magic Blade or Magic Cloth, you would get it in less than 3 days. 英語2-14 尚未解決 回答數: 1
英文 國中 約19小時以前 求解 2. Al f w a plane for the first time yesterday. He finally made his dream come true. 3. A: Let's meet at 7 p.m. Is it c B: Sure, I'm free tonight. 4. The church is a t for you? s from my house. It only takes me five minutes to walk there. 5. Joe has at d baseball cards. He knows a lot of baseball players. 待回答 回答數: 0