なぜ、塩化バリウムを熱いうちにゆっくり加えると、共沈ができづらくなるのですか？また、なぜ沈殿が大きくなるのですか？宜しくお願いします🙇‍♀️

■試薬 塩酸, 0.1mol L' BaCl2 水溶液, 硝酸銀水溶液. ■操作 アルミニウムイオンの定量で水酸化アルミニウムとして沈殿させたとき保存して いた液と洗液の硫酸イオンを含む溶液を用いて以下の操作を行う。 ① この溶液に水を加えるか、濃縮して約250mLとする. ② 塩酸で微酸性にし、 時計皿をかぶせて内容物が飛沫として失われるのを防いだ 上, ほとんど煮沸するまで加熱する。 ③ 硫酸イオンを含む溶液に、沸騰した 0.1mol L' BaCl, 水溶液を撹拌しながら少量 ずつ滴下し、硫酸バリウムを沈殿させる(式(1.29 さらにおだやかに加熱を け, 沈殿を沈降させ,上澄み液にさらに 0.1mol L BaCl溶液を加えても新たに沈 を生じなくなったら, ピーカーの内壁および時計皿の液滴を洗びんを使って水で洗 こみ, さらに沸騰した 2mLのBaCl2 溶液を過剰に加え、 十分撹拌する。 ④ 沈殿を含んだ溶液に時計皿でふたをして少なくとも1~2時間湯浴上で加熱する (温浸) [注17] このとき, 溶液が約200mL以下に煮つまらないように,必要であれば精 製水を補給する [注18] ⑤ 大部分の沈殿をピーカーに残しながら定量用5Cの紙を通して上澄み液を通 する。 ビーカー内の沈殿は, 熱湯で数回デカンテーション (1.2.1項参照)により洗浄 する. 上澄みは紙を通して過し、 最後に, 沈殿をすべて紙上に移す。 液に塩 化物イオンが検出 [注19] されなくなるまで熱湯で沈殿を洗う。 ⑥ 沈殿を含んだ紙を, 恒量にした磁製るつぼに移し [20] 河紙を灰化してから約 15分間十分に赤熱した後, デシケータ中で放冷して質量をはかる。 ⑦ るつぼの沈殿に濃硫酸を1滴加え [21] おだやかに加熱して濃硫酸を揮散させる 刺激性の白煙となるのでドラフト内で行う)。 恒量に達するまで, 20分間の強熱 デ シケーター内で1時間の放冷を繰り返す。 ここでは BaSO として質量を求められるので, AIK (SO) 12 H2O (カリウムミョ のの基本管とり求める [注16] 熱いうちに 0.1mol L BaCl2 水溶液を少量ずつ､ゆっくり加えるのは、他の化学種の沈殿 (共沈)を少なくすることと, BaSO の沈殿の粒子を大きくするためである。 [注1] 温液とは、微細な PRAEL DRIFSO. TOLE により沈殿粒子を大きく成長させることができる。 塩酸酸性条件下で温浸することにより。 小さい結 晶が溶解し,より大きな結晶として再度析出する。 温浸する代わりに数日間室温にて放置してもよい。 [注18] 水の蒸発により濃縮されると吸着や共沈が起こるので液量には注意が必要である。

文章を読んで上の1〜4の問題を解くものです。 分からないのでお願いします

3. Answer the following questions. 1 What is the difference between UNIX and Linux? 2 3 4 Choose one of the words in italics in the text. What is the definition of the word you have chosen? What are the three levels of a Linux system? What are the two main functions of the kernel? [Reading Text] UNIX was initially developed by researchers at Bell Labs in the 1970s. Today, UNIX and its variants are widely used mainly on servers. By far, the most well- known UNIX-like operating system is Linux. Linux is available in different distributions which include the Linux kernel and different collections of software. These distributions have various user interfaces, many experienced users preferring the command-line interface, or shell. Linux distributions include a range of software including text editors. memory. While the mechanics of Linux and other Unix operating systems are complicated, the components of a Linux system can be grouped into three levels. The lowest level is the hardware, such as Central Processing Unit (CPU) and The next level is the kernel. It enables communication between hardware and software, by providing instructions to the CPU and other hardware. The programs that are running on the system, or processes, make up the top level known as the user space. Processes in user space generally only have access to a restricted amount of memory and operations, this is called user mode. The kernel runs in kernel mode which allows it unrestricted access to hardware resources. The kernel provides functions such as process management and memory management. A computer only has limited Random Access Memory (RAM) and processor cores. Process management allows the system to run multiple programs (processes) at the same time even if the CPU can only execute only a few processes at a time. Memory management allows applications to share the system's memory while avoiding potential issues such as memory leak. Included with the kernel are device drivers that provide an interface for applications to communicate with hardware, such as hard drives. System calls allow user processes to access features that are executed at kernel mode, for example creating new processes.

The good life is one inspired by love and guided by knowledge. これのoneはあってもなくても良いのですか？

この1〜4の問題お願いします🙏🏼🙏🏼

3. Answer the following questions. 1 What is the difference between UNIX and Linux? 2 3 4 Choose one of the words in italics in the text. What is the definition of the word you have chosen? What are the three levels of a Linux system? What are the two main functions of the kernel? [Reading Text] UNIX was initially developed by researchers at Bell Labs in the 1970s. Today, UNIX and its variants are widely used mainly on servers. By far, the most well- known UNIX-like operating system is Linux. Linux is available in different distributions which include the Linux kernel and different collections of software. These distributions have various user interfaces, many experienced users preferring the command-line interface, or shell. Linux distributions include a range of software including text editors. memory. While the mechanics of Linux and other Unix operating systems are complicated, the components of a Linux system can be grouped into three levels. The lowest level is the hardware, such as Central Processing Unit (CPU) and The next level is the kernel. It enables communication between hardware and software, by providing instructions to the CPU and other hardware. The programs that are running on the system, or processes, make up the top level known as the user space. Processes in user space generally only have access to a restricted amount of memory and operations, this is called user mode. The kernel runs in kernel mode which allows it unrestricted access to hardware resources. The kernel provides functions such as process management and memory management. A computer only has limited Random Access Memory (RAM) and processor cores. Process management allows the system to run multiple programs (processes) at the same time even if the CPU can only execute only a few processes at a time. Memory management allows applications to share the system's memory while avoiding potential issues such as memory leak. Included with the kernel are device drivers that provide an interface for applications to communicate with hardware, such as hard drives. System calls allow user processes to access features that are executed at kernel mode, for example creating new processes.

このプリントが難しすぎてわかりません 誰か助けていただける方はいらっしゃいませんか？？

272 They go skiing, no matter (dl) cold it is. O how 2 what 273 Roberta is very talkative. That is ( the cause 2 the result 274 275 278 282 279 281 I gave him ( O how This is ( 1 how 277 He was late for school this morning, ( 1 what ) help I could give. 2 whoever ) he behaves toward me. 2 kind She is rich, and ( 1 what 276 私は祖父の生まれた日を忘れた。 I forgot the () () my grandfather (4 was 2 when illə 3 day sta born ) you go, you'll be on my mind. O) Wherever 2 Even 280 Language is a means ( 1 whom 2 Whoever 283 The book, ( 1 if 2, that 284 Benjamin is ( that 3 when ) I don't like her. 3 what 285 If there is anything ( I can do 3 which which 3 time ) is more, she is very beautiful. 2 which 3 how ) may say so, I will not believe it. 2 Whomever 3 but 3 Had On the morning of her eightieth birthday, my grandmother, ( her, took the dog out for a walk. it ② as I can do that ) is often the case with him. 4 where logo what 3 However ) Lread last night, was very interesting. 2 that 3 what w ) is called a successful man. 2 what why 4 way what 3 which DES ) people communicate with other people. (3 of whom ) for you, please let me know. that I can (京都産業大) as (千葉工業大) (武庫川女子大学短大) 4 No matter 4 that (駒澤大) (梅花短大) 4 that (大阪産業大) (東京電機大) 4 by which was usual with (北里大) (広島文教女子大学短大) 4 which 4 who (湘南工科大) (京都産業大) COOPE (センター) 4 what I can do

蒸気圧の問題に関して質問いたします。 問3に関して疑問です。 画像の赤線部分ですが、有効数字2桁にしてないのは何故ですか？（3.1×10^ 4など） 一応問題文に、"解答はすべて有効数字2桁で答えよ"と書いてありますので。 あくまで解答だから計算過程では有効数字2桁という... 続きを読む

E 20 (飽和) 蒸気圧 エタノールの蒸気圧曲線を右図に示し た。これを参考にして下の問いに答えよ。 解答はすべて有効数字2桁で求めよ。 た だし, 1.0×105 Pa=760mmHg, R=8.3×10° [Pa・L/(mol・K)〕 とする。 問1 エタノールの1.0×10°Pa=760 mmHg における沸点は何℃か。 問2 大気圧が 7.5 × 10 Paのとき,エ タノールは何℃で沸騰するか。 0. '0 10 20 30 40 50 60 70 80 90 100 温度 [℃] 問3 40℃ 5.0 × 10 Paの空気を入れた内容積 0.83Lの密閉容器に0.010 molのエタノールを加えて40℃に保つと, 容器内の圧力は何Pa になる (千葉大) か。 [mmHg] 1000 900 800 700 600 蒸気圧 1500 400 300 200 100

Ridgeway Associates agreed to pay an early completion bonus ( ) construction of their new headquaters was completed by March 30. 1. in... 続きを読む

(至急)3番と6番の並べ替えの答え教えて頂きたいです。

door leave (2)その日は都合がつきますでしょうか。 41 We are [not used (3 the you (3) a (3) 恐れ入りますが離陸の際は電子機器をご使用になれません。 42 3 electronic devices will h (4) 配布物のコピーをいたしましょうか? but Would you 43 [like 3 mak that day. 5-wonder (6) available] wonder if you will available be me like to (5) 物事はいつも思い通りにいくとは限りません。 Things do 44 [you travels 5 going (5) hake (6) この新幹線は時速280km以上の速度で走行します。 This bullet train 45 [at (2) more 3 280kn on Sorry electronic devices hot used may be mary 6-but when during takeoff travels them to. Q⑥ handout? your 6 photocopies 7 of] You! photocopies of G want (4) W3 (5) abrays the] not always way you wast go the unlocked SOFE per hour. than speeds] E more than 280km 6 speeds at

Would you mind if I asked you to close the door? Would you mind if I closed the door? このような文はなぜif節は過去形なのでしょうか？

英語全くわからん。テストまであと1時間！誰か教えてー！答えだけでも！訳しても、、、

and to hackat s in Focus: - ための表現 Ide 1~5の文を読み、ネットショッピング派(a) と実店舗派 (b)、 どちらの意見か判断しま しょう。 1. I can take home my purchase right away. 2. I can easily shop at a store located in a different country. 3. I like to ask the sales clerk to help me. 4. I can instantly compare prices at different stores. 5. I can try on the item to see if it fits me. a/b a/b a/b a/b a/b