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自然科學 大學

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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國文 高中

有沒有人有高一上龍騰國文一的詳解啊? 主要想看第一課的 在線蹲🥲🫶🏻

introdure 本找 國文1 進階卷 第一課 桃花源記 一年1班 20號 總分 請尊重著作權 勿擅自翻印 標記為30分鐘考測用題。單選,每题4分、閱測、多選(含開測)、混合題「選擇題」,每題5分、混合題「非選題」分數不變,同卷上標示】 壹部分:選擇題(共80分) 單選題(每題3分) -40 壑 ㄨㄛˇˋ 4) 下列「 內的字,讀音前後相同的是: (A)落英「繽紛/「鬢」髮如銀 (B)「」數月 「饞ㄏㄧㄩㄢˊ 涎欲滴(C)黃髮垂髫義/關山「迢遞 )苦心孤詣」╱民「脂民膏 2)② 下列文句,字形完全正確的是: ) ,到窮鄉僻壤從事醫療服務讓人感到十分溫暖 (C)他做錯事只會掩飾過失,欲藉此增進品 (A)一個人能夠寄情於丘豁,俗事不沾身倒是曠達 (B)他 綠無異是原木求魚(D)狹怨報復這種事真要不得,傷害別人也傷害自己 3.1 〈桃花源記>布局巧妙,下列關於文中「忘路之遠近」一句,闡述最適當的是: (A) 象:漁人領會進入桃花源的巧妙之法,並體悟隨遇而安,不拘泥於表象的道理(B)樂以 漁人為眼前美景所吸引,使他陶醉在奇特的景致中而忘卻生活中的憂慮 (C)渾然忘我: 注於尋找進入桃花源的路,因此忘卻自己的存在(D)陶然忘機:點出進入桃花源的幫 機,唯有不存機心、無所求方能進入桃花源 ° 漁人甚異之,復前行,欲窮其林。林盡水 「忽逢桃花林,夾岸數百步,中無雜樹……… 一山,山有小口,彷彿若有光。便捨船,從口入。」關於上文文意,分析最適當的是 人感覺到驚奇的原因包括桃花林的範圍廣大與樹種單一 (B)漁人想探究桃花林的盡頭 源頭,因此持續前進 C漁人主要以步行的方式探索桃花林,並在桃花林的盡頭偶 小洞 (D)山的小洞隱然有光,是因為已經沒有桃花林的樹蔭擋住,因而透出光來→? 「土地平曠,屋舍儼然,有良田、美池、桑、竹之屬,阡陌交通,雞犬相聞。」下列 (A)大雪三日,湖中人鳥聲俱絕(B)夜大雪 文所描繪的景象與氛圍最近似的是: 室,命酌酒。四望皎然,因起徬徨 (C)千乘之國,攝乎大國之間,加之以師旅 (D)野老念牧童,倚杖候荆扉雉面麥苗秀,蠶眠桑葉稀。田夫荷鋤至,相見語依佛 漁人欲離開桃花源時,桃源人言此處之事「不足為外人道也」,其用意為: (A 訪,打擾這安詳靜謐的世界 (B)桃花源的美好完滿,無須向世人證明 (C)桃花 道,不值得外人尋覓探究(D)展現桃源人謙虛保守、樸實敦厚的特質 桃花源為陶淵明筆下的理想世界,有別於現實世界,具有相當的隱密性。下列歌 中,最能展現其隱密性的是: (A)筵羞石髓勸客餐,燈爇松脂留客宿。雞聲力 蔥籠開五雲(B)種桃處處惟開花,川原近遠蒸紅霞。初來猶自念鄉邑,歲久此

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英文 國中

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

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英文 高中

請問第七題怎麼解

WISDOM ENGLISH broader of the D Talk their iver als. out of d Unit 8 Ban-Doh: The Most Authentic Taiwanese Eating Experience a student exchange program has really opened my eyes 2 the cultural differences between my country and Taiwan. One of the most memorable parts of my trip was when host family invited me to a wedding banquet in Kaohsiung. my 3 arriving at the banquet, I soon realized that it was totally different from what I'd expected. Back in the US, banquets are usually held in large dining halls. This one, taking place right out on the street! 4 was tent occupied nearly half the street. However, none of the pedestrians or the people in passing vehicles looked like they cared. Under the tent, guests sat at large round tables, chatting cheerfully. At one end of this temporary tent, there were cooks and assistants up shelter all the guests from the fierce sun, a huge delicious-looking food. 7 6 energetically to prepare platters of quite curious about how this fascinating custom of "open-air" banquets had first come about, I asked my host parents. The host father explained that this kind of banquet, known as a "ban- doh" in Taiwanese, 8 in the countryside. In the old days, when people gathered for a special event such as a wedding or an elder's birthday, everyone in the neighborhood would 10 9 to a ban-doh. The host would prepare all ingredients for the meal, and the neighbors would help out. Some would do the cooking, while others might provide tables, chairs, and eating utensils or assist in other ways. They would then all relax and enjoy the banquet together. The ban-doh back then was all about enjoying a sense of community and togetherness. Having the chance to experience this fascinating event, I feel truly lucky. It is the first story that I will share with my friends and family when they ask me about my student exchange experience in Taiwan. (A)1. (A)Taking part in 0809 (A) backward 4 (0) 3. (A) Upon B)4. B) 5. (A) Putting (A) In other words (D) in front of Until (D) In particular (B) Took part in (B) toward (C) Takes part in (C) regarding (D)Taken part in (B) as soon as (B) on the other hand (B) Put the moment (C) additionally (C)To put (D) Have put B) 6. (A) work (B) working 7. (A) Were (B) Feel XC) t (C) Being to work (D) worked 8. (A) originate (B) originating (C) to originate (D) Felt (D) originated (9. (A)cooperate (B) introduce (C) initiate (D) correspond ) 10. (A) revenge (B) arrange (C) arrest (D) commit

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英文 高中

想問這幾題 想問為什麼錯的不能用+對的為什麼能這樣用?🙏

英文考科 二、綜合測驗(占10分) +3 on 說明:第11.題至第20.題,每題1分。 bodzowbred no 第11.至15.題為題組 In 1956, African honeybees were introduced into Brazil to improve honey production in the tropical climate of South America. However, they started to mix with European honeybees already living there and produced a new kind of "Africanized" honeybees that are better at setting up hiyes and at reproducing than European bees. Keeping Africanized bees poses a challenge to beekeepers. Generally, beekeepers keep their bees in 11. wooden boxes, or hives. s. Afte After the worker bees fill a hive with honey, the beekeepers open the lid of the hive and blow a few puffs of thick, cool smoke into the hive to help calm 12. easier to collect the honey. the bees, 第 2 頁 共 10 頁 The problem with keeping Africanized bees is that they are more defensive than European bees. Even the slightest bump against the hive may 13. an alarm. A large quantity of smoke is needed to calm the bees. Two or three beekeepers may need to work together to safely harvest the honey. And they may need to wear heavier beekeeping suits even in hot, 14. weather. Beekeepers may also collect less honey from Africanized bee hives. European bees form search parties and work together to collect flower nectar from which honey is made, while Africanized bees usually work alone in search of flowers. Therefore, less nectar is brought back to Africanized bee hives. Africanized bees also spend less time storing honey but more time caring for young bees. That may be because they 15. in a tropical climate where not much honey is needed for food during the winter. (C) starved AB 11. (A) stacked door Lyc (B) stuffed obl (A) which make them (B) so that they are (C) thus it would be D (B) go off (C) call off (A) get off (D) staffed (D) making it DLL CC

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