為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.

希望有人能幫我看看這題😓我完全找不到哪裡有提及到c選項的地方⋯詳解也只是翻譯而已🥲

第 43 至 46 題為題組 20 Istroshod as to orius orbini.com When comparing different regional versions of Buddhism, Tibetan Buddhism strikes many bas particularly unique. This is in part due to the fact that Buddhists in Tibet practice a form be of Buddhism called Vajrayana, or "the way of the diamond," which differs significantly from Theravada (the form practiced primarily in Southeast Asia) and Mahayana (the form practiced primarily in China and East Asia). Another reason is that the Tibetan form has been heavily influenced by Bon, the indigenous folk religion of Tibet. Een twis John et 誰有物無論有無 Studie Originally, Bon was an animistic religion, meaning that adherents, called Bonpo, believed all things, living or not, possessed a soul. At the time, they didn't consider Bon a religion but a set of traditions. The priest himself was called a Bon, and his role was to conduct rituals, such bantas sacrificing animals, to assist humans to make their journey to the afterlife upon dying. He for also guided the people in keeping the many spirits of the world happy and avoiding places with dangerous forces-keep in mind that the Tibetans inhabit a hostile, high altitude environment.

想請問這題是如何解出來的？ 手寫的圖是我嘗試解的過程，但沒有解出答案，麻煩大家了🫠

21. A metal ion in a weak-field octahedral complex has two more unpaired electrons than the same ion does in a strong-field octahedral complex. Which of the following could the metal ion be? (A) Cr³+ (B)Mn²+ (C)Co²+ (D)Ti²+ (E)Cu²+

求詳解🙏🙏🙏

(1 point) The manager of a large apartment complex knows from experience that 120 units will be occupied if the rent is 300 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 10 dollar increase in rent. Similarly, one additional unit will be occupied for each 10 dollar decrease in rent. What rent should the manager charge to maximize revenue?

想問3-9的a跟c

Problems 3-1. Explain the difference between *(a) random and systematic error. (b) constant and proportional error. *(c) absolute and relative error. (d) mean and median. *3-2. Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule. 3-3. Name three types of systematic errors. *3-4. Describe at least three systematic errors that might occur while weighing a solid on an analytical balance. *3-5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid. 3-6. Describe how systematic method errors may be detected. *3-7. What kind of systematic errors are detected by varying the sample size? 3-8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is (a) 500 mg. (b) 250 mg. V(c) 125 mg. (d) 60 mg. 3-9. The method described in Problem 3-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative érror resulting from a 0.4-mg loss is not to exceed *(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) - 1.1%? 3-10. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the error if the total volume of titrant is percent relative (a) 50.00 mL. (c) 25.0 mL. 3-11. A loss of 0.4 mg of Zn occurs in the course of an percent relative analysis for that element. Calculate the error due to this loss if the mass of Zn in the sample is *(b) 10.0 mL. (d) 30.0 mL. 190 (c) 188 (d) 4.52 x 103 4.63 x 103 4.53 x 10 ³ √6 *(a) 30 mg. (b) 100 mg. *(c) 300 mg. (d) 500 mg. 3-12. Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean devi- Vation for each set. Use a spreadsheet if it is convenient. *(a) 0.0110 0.0105 (b) 24.53 0.0104 24.68 24.81 24.77 39.61 862 (f) 850 MA 3-13. Challenge Problem: Richards and W the molar mass of lithium and colle data. 24.73 Experiment 1 2 3 4 5 6 194 447 X 10 7 448 X 107 4.58 X 10 (a) Find the mean molar t workers. (b) Find the median molar ma (c) Assuming that the cam molar mass of lithium is the absolute ertor and of the mean value demi Willard. (d) Find in the chemical ues for the molar mus since 1910, and ag a table or spreadshera 1817 given in the a Richards and Willd. Com mass versus year to la of lithium has chang Suggest possible abruptly about 18 ant de (e) The incredibly deals Richards and W that major changes will occur. Disc calculation in pat (f) What factors ha since 1910? (g) How would you mass? 6See Chapter 2 of Applications of Microsoft Excel in Analytical Chemistry, 4th ed., for information about statistical 7T. W. Richards and H. H. Willard, J. Am. Chem. Soc., 1910, 32, 4, DOI: 10.1021/ja01919a002. built-in statistical functions. "Answers are provided at the end of the book for questions and problems marked with an asterisk The I of ₂ or inc rce of able vas error c often in individu ate resul data in rtainties. dimensio andom e analysts The result

想問這題的C C選項指的不應該是說 買賣NFT比想像中複雜 但文中所指NFT的買賣那麼複雜，那為什麼不是錯的勒

第 39 至 42 題為題組 As we progress further into the digital age, new terms and technologies seem to pop up everywhere. The latest of these is "NFTs" or non-fungible tokens. If something is fungible, it means that it is able to be replaced by an item of identical value, such as currency. Therefore, a non-fungible token cannot be interchanged; it is unique. NFTs are linked to the blockchain-the digital database that supports online cryptocurrencies like Bitcoin and Ethereum. Let's take a deeper look at NFTs and how people can buy, sell, and trade them. In simple terms, NFTs are one-of-a-kind digital works of art. They can take the form of GIFs, tweets, virtual trading cards, images of physical objects, and more. NFTs tend to attract investors who believe in the future of blockchain technology, and who are willing to spend top dollar to obtain a new form of digital currency. For example, Jack Dorsey's first tweet sold for $2.9 million, a video clip of a LeBron James slam dunk sold for over $200,000, and a decade-old "Nyan Cat" GIF sold for $600,000. Clearly, the NFT market is something to be taken seriously. So, the next question is: how does one participate in it? modi naging dato Basically any digital image can be purchased as an NFT. But before buying one, there are a y things to bolet gold sin few things to consider. You need to think about which marketplace to buy from. You also need to b bount itnorn s. slagg 21.05 think about what kind of digital wallet you'll be using to store the NFT, and which type of gos, of 10 and ab cryptocurrency you'll use to purchase it. The process of selling your NFT will vary based on which Dead orie ni einshins Imp leve moitoolsh marketplace you use. However, the process is simple enough-first, you'll upload your content to anthow ad of Lite to 2012 63 ele ning rolls of abno the marketplace to turn it into an NFT. Then, add details about the work and set the price. NFTS bengoof mi cont long as they have may sound confusing, but anyone is able to take part in this new digital market as a digital wallet and a little bit of cryptocurrency. zulli 120d so ausu gaivollot sa to doir'W.20 con cach these All th Ver DHE KU A

請問這題說他可以溜冰和看表演，為什麼不能選c?謝謝

. over US$1.5 billion.emooniatollebanonooritiba Although it's a commercial hub, people come from far and widə to take in all that the Rockefeller Center has to offer. They go for a spin around its ice-skating rink, enjoy a show at Radio City Music Hall, and check out the city views from the Top of the Rock Observation Deck. heide boog niob

EDTA滴定，求解🙏

2. Titration of Ca2+ and Mg2+ in a 50.00-ml sample of hard water required 23.65 mL of 0.01205 M EDTA (C10H16N203). Calculate the hardness of the water sample, expressed as ppm CaCO3 Element Ca Mg C H N o Atomic Mass (g/mol) 40.08| 24.31|12.01|1.008| 14.01|16.00

求分析化學解答

Derive the expression of concentration-based equilibrium constant (K') in terms of thermodynamic equilibrium constant (K) and the activity coefficients (y;) of the participating species for the dissociation reaction in a supersaturated aqueous solution of silver arsenate, AgzAsO4(s).

求好心人解答 感謝

科自名稱:綜合化學【材光系前贍應用材料碩士班甲組】 若號 :487003 販本科日依簡章規定「不可以』」佑用計算機(選擇題) 共4頁第1頁 耿還題 , 每題5分 , 總分 100分, 上 Forwoe RuX(coLa] complex, whatare the ineducible representation for experimentaliy observed IR strstching bands? 人 是人 5 1 my 和 列+朮 加說說 放廬詭ee 只下人生信和有生宮 共計 昌証只 eey (090Bo (Ba 0OBwe 四Bw 紀 Whataethe bonqordersof[Mo,(sooj7 5 2 @3 390) @4 把 Howmany microstates dose O atom hasin (1sj02sj(2p) configuration ? (9 1 (90915018 2 反 Whatisthe ligand-feld stabilization energy of[Fe(CN)dJr? 03125A (0295 (06 (0D35A 215 反 Whichofthe following step is included in the Fiseher-Tropsch process? (A) Insertion via metallocycJbutane (B) SplittingoftheC- obond (CO _c-Nbondfomation (D) 1,2.insertion 咒 stememts eoneeming systematie erors random enors and gross enors計 Bedeeeeted by Studentetestfortwoindependentsamples zed by averaging overalarge number ofobservatons by Fatest for two independcnt sarnples systematie erors. emorsinanEDTA Gitatoninclude nouton mistakes and geomeeming ttationik INCORRECT? daneutalizadon ttaton, whichcan beusedlo aahembe reduetion polental @f he analyte