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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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商業與管理 大學

想要求解大學初會這一題 練習了很多次 但還是會錯 想請教解題的觀念 因我覺得自己是題目沒有懂

II. The trial balance of Drysdale Company shown below does not balance. DRYSDALE COMPANY Trial Balance June 30, 2025 Errors Correct Debit Credit Debit Credit Cash £2,600 £540 £2,600 Accounts Receivable £7,600 £540 7,600 Supplies 600 Equipment £8,300 + £700 8,300 Accounts Payable £9,766 - £252 -- £225 £9,766 Share Capital-Ordinary 1,952 Dividends £1,500+ £300+ £300 1,500 Service Revenue £15,200+ £279 15,200 Salaries and Wages Expense 3,800 Maintenance and Repairs Expense 1,600 Totals £26,000 £26,918 An examination of the ledger and journal reveals the following errors: 1. Each of the above listed accounts has a normal balance per the general ledger. 2. Cash of £170 received from a customer on account was debited to Cash £710 and credited to Accounts Receivable £710. 3. A dividend of £300 was posted as a credit to Dividends, £300 and credit to Cash £300. 4. A debit of £120 was not posted to Salaries and Wages Expense. 5. The purchase of equipment on account for £700 was recorded as a debit to Maintenance and Repairs Expense and a credit to Accounts Payable for £700. 6. Services were performed on account for a customer, £310, for which Accounts Receivable was debited £310 and Service Revenue was credited £31. 7. A payment on account for £225 was credited to Cash for £225 and credited to Accounts Payable for £252. (@4×10 + 合計1%,41%) 2

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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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英文 高中

請問B、C如何判斷?我沒有辦法把這兩個選項跟文章串起來,看不出他們有什麼關聯😭

女大考三題型 Unit 8 The Risks of Bio-terrorism In 2001 a number of US government employees and citizens died, after opening 1 letters deliberately contaminated with a deadly disease. 2 The government has responded to the threat by introducing a "Bio-Watch" system, which uses special equipment to detect unusual organisms in the atmosphere. Nevertheless, it can provide an early warning system for major towns and cities, allowing medicine to be rushed to an area under attack. 3 However, the US government is much more worried about the psychological impact, rather than the actual death toll, of a bio-terrorist attack. Any disease effectively released as a bio-weapon in a highly populated zone could cause general panic. 4 As a result of the continuing bio-terror threat, the US government is trying to make its citizens more confident that it can combat this menace. By doing so, it hopes that there will be less widespread panic. Therefore, if a major bio-attack occurs, people can take immediate action to minimize the damage. (A) This was probably the work of a mad scientist, but it signaled to all Americans that bio-terrorism was a clear and present danger. (B) This might freeze normal economic activities in the world's biggest economy center, and thus cause chaos in the global financial system. (C/Infected people can then be treated, and most will survive. DUnfortunately, this technology cannot filter the mail or prevent terrorists releasing diseases in enclosed places. 1. 2. y 3. C 4.

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英文 高中

想問12題

Coined in 2020, the term "revenge travel" stems from a feeling of wanting to break free from the monotonous life of lockdowns. After being confined in their homes for months due to the fear of the highly contagious disease and subsequent worldwide lockdowns, many people are more before the pandemic, It appears that now, rather than feeling afraid and worried, people are just 11. to travel even 12. lockdowns. With this mindset, the tourism ready to get back at something; the year 2020 industry has greatly bounced back right after the COVID wave starts declining. Many people want to go somewhere so eagerly as they have felt imprisoned for so long. Take India for example. Many people still go traveling out of sheer frustration and the feeling of annoyance from August to October, generally considered the off-season for travel because of unfavorable weather conditions. 13. the freedom of traveling is being celebrated, everything comes at a price. That is, revenge 14. months of lockdown, which breaks the chain of COVID-19 spread., travel has the potential to As tens of thousands of people flock to popular scenic sites, it is crucial for everyone to observe social 15. the chance to be infected will be the last thing people expect. distancing and mask wearing. Although these new norms can be quite disturbing, in the post pandemic era, people have to be prepared to change their behaviors. 11. (A) compelled A 12. (A) lost to $₁5 2 (B) ambitious (C) reluctant (D) desperate (B) occupied with (C) intended for (D) engaged in

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英文 國中

求解 65、71、83 、84、85 拜託大家了 謝謝🙏

( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( )65. My brother fooled around, (1) and does (2) did )66. The poice are trying to find a )67. I found quite a few men and women (1) rush (2) rushed ( ( ( ( ( )68. Engines are machines. (1) that produces (2) producing )69. Thousands of products (1) make nothing meaningful. (3) and doing (4) doing child. (1) lose (2) lost (3) miss (4) missed (1) spoken )74. When I returned (1) to steal (3) rushing power or motion. (3) produced from coal are now in daily use. (2) made ouer (3) making )70. There are many commuters (1) waiting for (2) waiting )71. In spite of my comfort, the punished (1) to crying (2) cried )72. I found a dog (1) to run )73. Generally out of the building on fire. (4) to rush )75. Give the message to the gentleman (2) stands (1) standing )76. The pollution level the train at the station. (3) wait for boy went away (3) to cry )84. (4) which producing (4) to wait for (4) crying over by a car on the road. (3) ran (2) run (4) running reports are prepared for busy administrators. (2) speak (3) speaking (4) spoke home, I found the window open and something. (2) stealing (3) stolen (4) stole (1) sit (2) seat )79. We found that the house (1) standing (2) stands )80. Those old people sat under the tree (4) to make (3) who stand (4) stood high today, people can not help breathing in car exhaust. (1) is (4) has (3) being )77.__ from space, the earth is almost perfectly round and appears to have a smooth surface. (1) Seen (2) Moved (3) Found (4) Kept (2) has been )78. When I entered the room, I found him by the fire. by the door. (3) seating (4) seated in the distance was deserted. (3) who stand (4) stood stories. (3) to speak (1) telling (2) to tell )81. He is so faithful that I have never heard him the ghost (4) spoke others. (1) speak ill of (2) spoken ill of (3) to speak ill of )82. The poor crippled child (4) speaks ill of on the ground became my daughter's (3) laying (4) lying (2) lain main concern. (1) lied )83. The nurse approached the child, to make him relaxed. (1) and tries (2) trying (3) and trying (4) tried by the policeman, the robber ran toward the shopping mall and disappeared. (1) Seeing (2) Seen (3) To see (4) Having seen )85. You must leave your room to be on the safe side. (1) lock (2) locked (3) to lock (4) locking

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