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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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英文 高中

求解第2、7題

10% Can money buy happiness? People have always wondered 1. money really makes them happy. Researchers used to believe that it is up to a certain point happiness increases with income: beyond an annual income of $75,000, people are no happier with higher salaries. 3., recent studies have indicated that happiness still increases when salaries are higher than $75,000. The main reason that money seems to bring happiness is 4. more money can bring greater financial security. Daily activities such as grocery shopping are easier when most of the anxiety regarding what 5. is removed. In this way, money could be viewed as a solution problems. 6. one's on individual Most studies related to this question are based on averages rather than experiences. 7., there are many exceptions to the rule that happiness increases with 8. making $25,000 per year. By contrast, one's income. Some people are satisfied others feel that millions of dollars are required 9. their desired lifestyles. Compared with averages, the individual items that people spend their money on may be truer measures of happiness. A few studies have indicated that people are happy 10. they spend their money on specific items. This suggests that although having all the money in the world may not make you happy, it would give you more choices in purchasing the items you want. Such choices could surely increase one's happiness. anw spalliv siff (D) whether ) 1.(A) where (B) who (C) what (A) 2)(A) that (B) when (E) how (D) which (A) 3.(A) However (B) Thus (C) Similarly (D) Moreover (C) 4.(A) who (B) why (C) that (D) where B) 5. (A) can one afford (B) one can afford (C) does one afford (D) can afford one 6. (A) to (B) with (C) for (D) in 7.(A) Finally (B) In addition (C) Therefore (D) For example 8.(A) on (B) to (C) by (D) with

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公民與社會 高中

請問藍色那條不是就是B的意思嗎?跟C有啥關係🤔

17-18為題組 選題每題4分,非選擇題配分標於題末,占53分) 調查 ESOSO ☆☆ ◎2022 年的英國政局可謂數度動盪。自2022年9月保守黨強生(Johnson)交出首相大權,至繼任首相特拉 斯(Truss)10月底結束了短短45天執政生涯,即便到現任首相蘇納克(Sunak)上任後,也在2023年初 也面臨國內高通貨膨脹,以及各行各業紛紛發起罷工等棘手的問題,而身為在野黨的工黨也趁勢醞釀重新 舉行國會大選的聲浪。英國首相的國會解散權,在近十年中也是歷經數次變革(如下表),請問: 法案名稱 《2011年國會任期固定法》 (Fixed-term Parliaments Act 2011) 《2019 年國會提前大選法》 重點內容 1. 廢止英王解散國會的皇家特權,國會大選每五年 固定舉行一次。 2. 國會任期未滿提前改選觸發條件: (1)國會通過不 美食信任案,或者(2)有三分之二下議院議員同意。 1.規避《2011年國會任期固定法》,使2019年大選 提前至2019年12月12日舉行。 (Early Parliamentary General Election Act 2019) 《2022年解散和召集國會法》 (Dissolution and Calling of Parliament Act 2022) 如、 有 2. 法令在選舉結束後自動失效。 1. 廢止《2011年國會任期固定法》。 2. 恢復英王解散與召集國會的皇家特權。 3. 國會任期最長五年,每滿五年自動解散。 4. 解散國會的皇家特權不受司法裁判。EINI 54.解散國會的皇家特權不受司法裁判。 B 請觀察表中三部法典的主要內容,並判斷:在2022 年的修法過程裡,英國內閣制度的最大變 AS-IS 17 革是以下哪一項權力運作機制? (A)將虛位元首改為實權元首 (B)賦予英國皇室至高的特權 出能吉簿會員著平控開知 張卡(C)將解散國會權力回歸首相? (D)將國會改以最長5年任期 人員香港立文爭0005

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