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.

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有人會寫英文短文嗎？

Get Ready to Write things. *識全集中 A Venn diagram can help you compare and contrast two different Ants How they are the same Bees • Live in • Black or brown •Can walk a long way • Birds like to eat them Insects • six legs Live in hives Yellow and black Can •Make e both popular. use a ball exciting How they are different Read the following report comparing ants and bees. Read again and complete the Venn diagram with information that tells you how ants and basketball 219 mod MS 89 and bees are the same or different. Introduction How they are the same How they are different Conclusion Ants and Bees nobuboun There are many kinds of insects in the world. All insects have six legs, but they can be very different. Two insects, which you can see everywhere, are ants and bees. Ants live in nests. Thousands of ants live together. Bees also live together, but they live in hives. Both ants and bees have a queen. The hard working queen lays many eggs. Ants and bees work very hard to find food and build their homes. But be careful because when they get angry, they can hurt you. yart worl hib Ants and bees are also different in many ways. Ants are usually smaller than bees and they are brown or black in color. However, bees are yellow and black. Bees can fly and eat from flowers. This food, which becomes honey, is delicious. On the other hand, ants often walk a long way to find food. Some birds and animals like to eat ants. As you can see, ants and bees are both very interesting no insects. They are the same and different in many ways. Which one do you like? IN LINE

學測英文作文的題目通常會寫出請文分兩段做題。想請問這樣是不是代表不行用introduction 一段，body 一段，conclusion 一段，總共三段呢？

求解第二題！ （因為圖片要兩題一起看所以順便拍進來了）

§ 1.1 An Intuitive Introduction to Limits For Exercises 1 and 2, use the graph of the function f to determine whether each statement is true or false. Explain.(從圖形決定極限) 1. O lim f(x)=XX/ x→-3+ lim f(x) = 1. x→2 2. a) lim f(x)=1. x-→-3+ e) lim f(x) does not exist. x →4+ c) lim f(x) = 2. x->2 b) lim x->0 flim f(x) = 3. x-5 d) lim f(x) = 3. x-4 f(x) = 2. Xe) lim f(x) does not exist. x →3 lim f(x) = 2. X→4 S b) lim f(x) = f(0). x->>0 d) lim f(x)=3. x->2* y 4 3 234 y = f(x)

可以幫我想一篇題目為Recreation center 的英文作文嗎？（6/6 12:00以前要）

請問第四題如果選D的話合理嗎？覺得蠻通順的 謝謝!

II. 綜合測驗 With all the TED Talks available, how can you choose a good one to start with? TED.com offers several playlists that can introduce you to TED Talks. 1. playlist* features the 25 most-watched talks. Another, 2. "11 must-see TED Talks," aims to give an introduction to the wide range of topics covered. Still another has 3. of the very first talks to be uploaded. 4. , you might start with the one talk that is on all three lists: Sir Ken Robinson's "Do Schools Kill Creativity?" This talk 5. is from 2006, is about encouraging creativity in school. TED's most popular talk, it 6. more than 58 million times over the years. Talks also bed The 563.6 Talk. Eve miss one 1₁. online. T even if y If you still don't know 7. a talk, try TED.com's TED Recommends* system. Using jetoi sii ni sau tot jelewater at slytestil vibaori-pos nseil. some topics you find interesting. 9. with that this is very easy. All you have to do is 8. information, the system recommends a talk for you to watch and rate. After you watch that first 5021 (8) muntari A talk, a second is recommended based on your rating. 10. you watch and rate, the system learns your preferences* and can suggest more and more interesting talks for you. However you choose your first video, TED Talks can be so interesting that it probably won't be your last. 註*: playlist 播放清單;recommend 推薦;preference 偏好 註*:re 1. 6. (B) One coronal THC (C) Another (D) Other ( IV. 篇重 (B)1. ) 1. (A) Some s ohni T (B) known for (C) known as (D) known to (A) S (V) 2. (A) known by Say It (8) do (C) little SURMA) (D) a little st (B) a few B) 3. (A) few ( () 4. (A) In fact commemo (B) In other words (D) However 1 blowodi 10ei (C) Instead blow od si notlesinagio C (C) that (B), which (D), who (^) which bos HO(A) sl odi omr 978l odi Every videos all also launc follow the local focu (B) C in (C) T

求解這三題 感覺有點看不懂這篇 謝謝

IV. 閱讀測驗:9% Prometheus Bound is a famous play that is considered by most scholars to be the work of the ancient Greek playwright, Aeschylus. Often referred to as the father of tragedy, Aeschylus is thought to have written around 80 plays, but only seven survive. One of these is Prometheus Bound. Based on the story of the Titan punished by Zeus for giving fire to humans, the play contains just seven characters. It starts with Prometheus being tied to a cliff in the rocky Caucasus Mountains by the gods of power, violence and metalwork. Unable to free himself, Prometheus is then visited by three othe 背面尚有試題) 61003S2

第二題為什麼可以接to？？🤔

胖合 1. inspiration 2. inspired 3. inspiring 4. connections 5. connect 6. communication 7. communicative 8. communicate 9. introduce 10. introduction 11. introductory IL.文法題 1. Leaving you really breaks my heart because we've had some great together. (A) time (B) times 2. You inspire me to connect others and to communicate better. (3) (A) on (B) with (C) to (D) for so much-new music, new games, new knowledge, 63. You've introduced me and more. (D) for (C) to (A) on (B) with

第一題為什麼是times🤔🤔？

胖: 1 1. inspiration 2. inspired 3. inspiring 4. connections 5. connect 6. communication 7. communicative 8. communicate 9. introduce 10. introduction 11. introductory 38 B02 II. Xito 7 1. Leaving you really breaks my heart because we've had some great together. (A) time (B) times 2. You inspire me to connect others and to communicate better. () (B) with (C) to (D) for You've introduced me so much-new music, new games, new knowledge, and more. (A) on (C) to (D) for (A) on (B) with