化學 PH值計算（多質子酸解離） 請問這題錯在哪裡呢😭

0.3M Na2HPO4 Example #1: Determine the pH of 0.300 M sodium hydrogen phosphate, Na₂HPO4. Phosphoric acid, H3PO4, contains K₁₁ = 7.5 x 10-3, K₂ = 6.2 x 10-8 and K₁3 = 4.2 x 10-13. al a2 a3 x² 0.2x=4.2X10-13 x² = 1.26×10-¹3/- 0.₁126×10/2 x = 0.355x100 HP04² = H30t+ P04² 0.3 0.3-X +x +X X X 3- 04-beg[+0]- (6.459.78 PH= Simp -6

想請問28題，理解A選項是錯的，但B選項為什麼不能選？考前急需🙇謝謝~

( 27. ~ 29.) Fitty If you like a night out and don't want to spend much on dinner, this is a great place for you. Fitty has all kinds of Italian food, like spaghetti, pizza and salad. But, it's not a good place for you to enjoy a quiet night. Food: ★★☆☆☆ Service: Price: Chilly FOCE Enjoy a Latin American night out! Chilly has Mexican food. Their seafood and chicken dishes are great. You can enjoy music under the stars when you eat. You can also sing or dance with friends here. Food: ★★★☆☆ Service: ★★★☆☆ Price: ★★☆☆☆ Le Bistro If you are planning a quiet dinner for your lover, try Le Bistro. It has the best French food in the city - expensive but delicious. Food: ★ Service: ★★★★☆ Price: PHO17 Would you like to try something different? Try the menu at the little Vietnamese restaurant. The rice and noodles are famous. Food: ★ Service: ★★☆☆☆ aspinig moe vol gui Price: ★☆☆☆☆ Tokyo This quiet and friendly restaurant offers the best sushi in the city. The service is excellent and you can watch the cook prepare your meal. Food: ★ Service: ★★★★☆ Price: Gulu Want to try something new? At Gulu, you make your own dinner. Fill a bowl and a plate with vegetables, kinds of meat, rice, noodles, and seafood. Then, you can cook it at your table. You can eat as much as you can, and it just costs $9. Food: ★★☆☆☆ Service: ★☆☆☆☆ Price: ★☆☆☆☆☆ spaghetti #offer #sushi

請問這是這次112學測生要背的基本單字嗎 還是這是舊的 本人英文6級最高 有沒有什麼網站跟程式可以介紹給我加強單字的

19:37 :3 1552438563395h2EQg... ***** LEVEL 1 (1,080 words) a/an [an] art. - able ['eb!] adj. E T " about [a baut] prep. above [ǝ'bav] prep. adv. ... according to [akordin tu] across [ǝ kros] prep. act [ækt] vt. action ['ækfan] n. actor/actress ['ækta-]/['æktris] n. 男演員/女演員 add [æd] vt. ho address [ǝ dres] n. adult [ǝ'dalt] n. A afraid [ǝ fred] adj. tá after ['æft] prep.在...以後 afternoon ['æfto `nun] n. again [o`gen] adv. against [ǝ genst] prep. # age [ed3] n. # ago [o`go] adv. ... agree(ment) [ǝ`grimənt] vi. ahead [ǝ'hɛd] adv. air [er] n. 2 airmail [`er mel] n. airplane/plane ['er plen] n. airport ['er port] n. all [ol] adj. allow [ǝ'lau] vt. almost ['ol most] adv. + alone ['lon] adj. adv. along [ǝ`lɔŋ] prep. %* already [ol'redi] adv. also ['olso] adv. always ['olwez] adv. am [æm](第一人稱) vi. 是 among [ǝ`maŋ] prep. ...+ and [ænd] conj. fu anger ['ængo] n. angry ['ængri] adj. animal ['ænəm!] n. another [ǝ`naða] adj. answer['ænso] n./vt. ant [ænt] n.螞蟻 any ['ɛni] adj. € 1J6) anything ['ɛni, 01ŋ] n. ape [ep] n. 大猩猩 appear [ǝ`pir] vi. apple ['æp!] n. ** April/Apr. [`eprǝl] n. A are [ar](第二人稱)vi. 是 better ['beta] adj. between [br`twin] prep.在...之間 bicycle/bike ['baisik!] /[baik] n. 腳踏車 big [big] adj. 4 bird [b3-d] n. 4 birth [b30] n. bit [bit] n. - bite [bart] vt. black [blæk] adj. 凸 area ['ɛrio] n. arm (1) [arm] n. army['armı] n. ** around[ǝ raund] adv. / prep. art[art] n. # as[az] prep. adv. conj. ♬a ask[æsk] vt. 詢問 at[æt] prep.在...地點 August/Aug. [o`gast] n. A aunt/auntie/aunty [ant] n. 1 autumn/fall [ɔtəm]/[fǝl] n.** away [ǝ'we] adv. baby ['bebi] n. back [bæk] n. ## bad [bæd] adj. bag [bæg] n. ball [bol] n. ** 7 balloon [bo`lun] n. banana [bə`nænə] n. band [bænd] n. bank [bænk] n. (1)銀行 (2) 河堤 bar [bar] n. 棒;酒吧 barber [barba-] n. base [bes] n. A baseball ['bes,bol] n. *** basic ['besik] adj. basket ['bæskit] n. 7 basketball ['bæskit,bol] n. bat [bæt] n. (1)球棒 (2)蝙蝠 bath [bæ0] n.沐浴;浴缸 bathe [beo] vt. bathroom ['bæ0 rum] n. be [bi] vi. * - * beautiful ['bjutəfəl] adj. beauty ['bjuti] n. ** because [bi'koz] conj. become [bi kam] vi. * bed [bɛd] n. bee [bi] n. beach [bit] n. bear [ber] n. (1) beat [bit] vt. * before [br for] prep. ... begin [br`gin] vt. behind [br hand] prep.... do believe [bi liv] vt. 1 bell [bel] n. belong [bo`lɔŋ] vi. * below [bo'lo] prep. ...Fo beside [bi said] prep. best [best] adj. *# cap [kæp] n. 棒球帽 car [kar] n. card [kard] n. care [ker] vi. 關心 careful ['kerfǝl] adj. carry ['kæri] vt.(用手)提、搬、扛 case [kes] n. (1)箱子 (2)案件 cat [kæt] n. catch [kæt[] vt. 接住、抓住 cause [koz] n. E 完成

請問大家，要怎麼分辨動詞型態啊啊啊，比如：was / were+V-ing 什麼時後單數後 +s 什麼時後 +ed跟過去式😭😭喔對還有 to+V

求解🙏

The photoelectric effect can be used to measure the value of Planck's constant. NOTE: The following data are fictional, and will give a result that is quite different from the real value of Planck's constant. Be sure that you do not use the real value of Planck's constant in any calculations here. 1 S -1 Suppose that a photoelectric effect experiment was carried out using light with v = 7.56 × 10¹4 s-¹, and ejected electrons were detected with a kinetic energy of 2.41 × 10-¹1 J. The experiment was then repeated using light with = 9.81 × 10¹4 s and the same metal target, and electrons were ejected with a kinetic energy of 9.09 × 10-¹1 J. Use these data to find a value for Planck's constant (in J • s). Hint. It may help to start by thinking about how you would calculate the metal's binding energy if you already knew Planck's constant. Submit Answer S Try Another Version 2 item attempts remaining

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幫助我吧!!求求了

9 1. ( 2. ( 3. ( 4. ( 5. ( 6. ( 7. ( 8. ( 9. ( 又法選擇(其他考點) (每題1分) Mrs. Brown gave me a bag of homemade cookies her car. (A) for (B) with (C) by (D) as ) Kelly broke up with her boyfriend for (B) in (C) to (D) at ) Please wait here unless (D) until a reward for helping her wash a good reason he had cheated on her. (A) the clerk calls your name. (A) and (B) although (C) the Zika virus in 2015. (A) of ) Half a million people in Brazil were infected (B) with (C) at (D) on )The plane will be taking off in (D) a little bit beside minutes. (A) a little (B) a few (C) as few as ) The main actor and actress in the movie Ant Man and the Wasp visited Taipei, and fans Taiwan came to meet their idols. (A) with (B) over (C) across (D) ) I found my wallet was gone, I reported this to the police. (A) Although (B) Once (C) Due to (D) Until ) it was getting late, we tried to look for a restaurant for dinner. (A) That (B) Whether (C) As (D) If ) Patrick Dempsey is just an actor; he is a famous race car driver, too. (A) as good as (B) more than (C) just only (D) no more than

請問大家20題為甚麼不能選c?

In at some time in their lives. There have been very few history of mankind, there being mainly some strict religious groups, 12. to this in the entire who sailed from Europe to America, 13. the first Puritans ji za 14. felt that music should only be used to worship their deity and never for pleasure 15. b Tesalb auoigs Even joyful things, however, have their limits. The best song or dance in the world would become less and less enjoyable if it continued 16. Part of the pleasure in song and dance is 17. it has a beginning and an end. When it becomes too drawn out over a long time and 18. it becomes boring. We become impatient and 19. want to see or hear it. This too is we have come to use the idiom "song and dance" to mean a boring, long excuse or explanation which is of no interest to us. repetitious (B) endlessly (G) how (H) exceptions (C) what (alone of alo suc such as no longer (F) that participate as if Ewho (K) 三、篇章結構 Being left-handed gives me a view of what it is like to be a minority. After all, I'm white

求解18 題

(A) cheap (B) common 17. Anne: What will you (C) expensive (D) important to the party? Chloe: The dress over there. Anne: Gre good on you. You'll be the prettiest girl at the party. (A) show (B) invite (C) wea by your mobile wallet? C AD 18. Emi: When you go shopping, do you usually Becky: No, I don't have a cellphone. (A) pay (B) take (C) use (D) spend 19. Josh: I planned to take a trip to London this summer. Do you want to go with me?

為什麼速度不變動能還是減少了，謝謝！

A jet airplane begins a trip at an altitude of 9000 m, traveling 200 m/s. One hour later in the flight, it travels at the same speed, but at an altitude of 4500 m. How was its kinetic energy changed? ©Cengage a. It was reduced to half. b. It was doubled. C. It was not changed. d. It would be slightly less. Slide 8-4