想請問這題為什麼是C呢？看不太懂

10. N₂O4 ⇒ 2NO₂ is an equilibrium system. If the volume of the container becomes ? double and reaches a new equilibrium at constant temperature, which of the followings is wrong? (A) [NO₂] becomes smaller. (B/Total moles increase. The product of PV becomes The pressure becomes half of initial pressure. larger. (E)[N₂O4] becomes smaller.

想請問為什麼答案是C呢？如果可以也麻煩講解其他選項

(C10.N₂O4 — 2NO¿is an equilibrium system. If the volume of the container becomes double and reaches a new equilibrium at constant temperature, which of the followings is wrong? (A) [NO₂] becomes smaller. (B) Total moles increase. (C) The pressure becomes half of initial pressure. (D) The product of PV becomes larger. (E)[N₂O4] becomes smaller.

求解🙏

Laser welding is a technique in which a tightly focused laser beam is used to deposit enough energy to weld metal parts together. Because the entire process can be automated, it is commonly used in many large-scale industries, including the manufacture of automobiles. In order to achieve the desired weld quality, a particular pair of steel parts being joined must absorb energy at a rate of about 1.1 x 104 W/mm². A common laser welding system employs a Nd:YAG laser operating at a wavelength of 1.064 µm. At this wavelength, this particular set of steel parts will absorb about 80.% of the incident photons. If the laser beam is focused to illuminate a circular spot with a diameter of 0.020 in, what is the minimum power (in watts) that the laser must emit to reach the 1.1 × 104 W/mm² threshold? (Recall that 1 W = 1 J/s.) W How many photons per second does this correspond to? (For simplicity, assume that the energy from the laser does not penetrate into the metal to any significant depth.) Submit Answer Try Another Version 1 item attempt remaining

請問一下這個東西到底要怎麼用、要用來做什麼的 我查不到啊啊啊啊啊啊啊啊啊啊啊啊啊

A LABQUEST'2 What is included LabQuest 2 unit Rechargeable battery (in unit) - Power adapter - USB cable - Stylus (in unit) - Stylus tether Quick-Start Guide Logger Lite computer software (optional) is available for download at www.vernier.com/loggerlite CONNECTED SCIENCE SYSTEM™ are now collecting data. You Collect button a sensor, and tap the Turn the unit on, connect Vernier Software & Technology I www.vernier.com | 888-VERNIER (888-837-6437) Warranty Information LabQuest 2- to be free from inate 15 workmanship for a period of five years from the date of shipment. 3 Collect Data LabQuest 2 Battery - This product is warranted to be free from defects in materials and workmanship for a period of one year from the date of shipment. damage to the product Warranty does not oper use. caused by abuse or LABQUEST 2 for at least 12 hours. Let your LabQuest charge adapter to your LabQuest. Connect the power 2 Charge Your LabQuest FIRST-TIME USE Vernier of the unit. battery, from the back which protects the Remove the pull tab, 1 Enable the Battery

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.

（7）怎麼寫😅

(4) Please describe the differences between ideal gas and real gas (2%) (5) In Van der Waals equation of state, please describe the meaning of parameter "a" and "b" briefly.(4%) (6) Please define Gibbs free energy (G), state the limiting factors and the meaning of Gibbs free energy [3%] (7) According to (4). Please provide two possible forms of energy that might affect the Gibbs free energy of a system. [2%]

求救

Chrome 檔案 M Gmail Course Home Syllabus Scores YouTube Pearson eText Study Area Purchase Options Course Home User Settings Document Sharing Course Tools 單 openvellum.ecollege.com/course.html?courseld=17667848&OpenVellumHMAC=9c8d5dd7baa0c70ec3a75db4e52f2d39# 10001 檢視 歷史記錄 書籤 設定檔 分頁 視窗 說明 地圖 > 翻譯 X Ghe binding energy of a two-par x + <L.8 Problem 8.75 The binding energy of a two-particle system is defined as the energy required to separate the two particles from their state of lowest energy to r= ∞o. The potential energy of the two atoms in a diatomic (two-atom) molecule can be written b U(r) = − 6 +12, where r is the distance between the two atoms and a and b are positive constants. 10月 13 Part A Determine the binding energy for this molecule. Express your answer in terms of the variables a and b. Ebind= Submit Provide Feedback VAEO tv JA xa Xb b √x x x X Incorrect; Try Again; 3 attempts remaining Previous Answers Request Answer 1999+ C |X| ? X.10n 10月13日 週四 上午12:33 I 9 of 10 Constants 更新 Next >

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

請問有人會這三題嗎

= 1x 10⁰ p -45. Perform the following unit conversions. meme a. Congratulations! You and your spouse are the proud parents of a new baby, born while you are studying in a country that uses the metric system. The nurse has gibre informed you that the baby weighs 3.91 kg and measures 51.4 cm. Convert your baby's weight to pounds and to ou ounces and her length to inches (rounded to the nearest 3.91 quarter inch). 4536 =8 9.9102 10 20. 2 in, 2b. The circumference of the earth is 25,000 mi at the equa- tor. What is the circumference in kilometers? in meters? 三 c.) A rectangular solid measures 1.0 m by 5.6 cm by 2.1 dm. Express its volume in cubic meters, liters, cubic inches, and cubic feet.

第二小題B錯哪了 我是使用刪去法

易忻资優地科 析 ※閱讀素養專區※ 荷蘭青年柏揚·史拉特(Boyan Slat)在 16 歲的一次潛水時對海洋中滿是垃 圾的景象感到十分震驚,因此他於 2013 年成立海洋清理基金會,立志解決海洋垃 圾危機,他計畫利用海流、風力等要素,讓垃圾自動被攔截而不需要人工處理;史 拉特設計的U型浮柵,下方有三公尺的防護網,可以攔截大部分的海漂垃圾,而海 洋生物也可以輕鬆游過防護網,不會因此受困其中。 史拉特表示,如果這次實測成功,他們會再開發 60 個 U型浮柵,預計五年內 清除太平洋垃圾帶一半垃圾,未來也希望在其他海域布署,期望 2040 年清除全球 90%的海漂垃圾。 【學測地科總複習】 然而在 2018 年 9 月,年僅 24 歲的史拉特經由大量募資而研發出的系统 001 (System001)(俗稱海洋吸塵器)從舊金山出發後經過了幾個月,卻發現成效不彰、 出師未捷,需要不斷調整、維修,甚至在 2019 年1 月系統斷裂,最終宣告失敗。 請回答以下兩題: ( )(1)團隊宣稱在洋流、風和海浪的作用下,系統 001 會比塑膠漂得更快, 然後把塑膠垃圾集中到U字形的圍欄中間。理想情況是風、海浪和洋流全都是往同 另一個方向走,造成失敗無法有效收集垃圾的可能原因以及未來可能遭遇的問題何者 錯誤? (A)海洋的力量難以估計,大浪、狂風暴雨都可能使系統毀損甚至可能讓 系統本身變成一個 600 公尺的超大型海洋垃圾 (B)因為科氏力的影響,風吹的方 向和海水的移動方向並不相同,三公尺深的浮動圍欄和表面的垃圾受到海水的力方 向並不相同 (C)洋流的流動受到很多因素影響而難以準確估計,使系統 001 難以 到達預期的垃圾帶位置 (D)系統 001 漂浮在海中會使生物附著、生長,最終因為 重量太重可能使系統沉沒 (E)為了使系統 001 能追上塑膠碎片漂流的速度,所使 用的化石燃料可能造成更多的損失 国家海 COT R&瑞金 )(2)這個系統希望攔截的垃圾帶位於東太平洋上,面積估計達 160 萬平方公 里,比 44 個臺灣還大,其上漂浮著約 1. 8 兆片塑膠垃圾,重約8萬公噸,垃圾帶 對人類、對環境的影響何者錯誤?(A)塑膠垃圾被分解成小碎片、微粒,經由食 物鏈而進入人體內 (B)覆蓋海面的超大型垃圾帶,可能造成海洋湧升流消失,無 法將營養鹽帶至海水表層 進入海洋的垃圾,除了漂流在表層的塑膠碎片,還 有很大的比例會沉降在海床上,污染深海環境 (DV很多的垃圾含有致癌物質,危 害海洋生物 (海洋環流位置有時會稍微偏移,被聚集在垃圾帶上的部分垃圾可 能脫離環流,被沖上岸重新污染陸地 S423) 解析:(1)(E);(2)(B) 可乾淨 (即安出去) (湖和出生)因总 06ay 因总 G