Grade

Type of questions

Chemistry Senior High

類題4の問題、解説も含め至急お願いします🙇‍♀️

11 例題 4 ファラデーの法則 白金電極を用いて, 硝酸銅(ⅡI)水溶液を0.50Aの電流で1時間4分 20 秒間電気分解した。 ファラデー定数を 9.65×104C/mol として次の問 いに有効数字2桁で答えよ。 (1) この電気分解で流れた電子は何mol か。 1 (3) 陰極で生成する物質の化学式とその質量(g) を答えよ。 (2) 陽極で発生する気体の化学式とその物質量を答えよ。 FACE (1) 流れた電気量は, Q[C] = i[A] × t[s]より, HE 0.50A × ( 64 × 60 +20) s = 1930C 電子1mol当たりの電気量の大きさは9.65 × 104C/mol であるから, 流れた電子の物質量は, 大 1930 Cal -=2.0×10-2mol 9.65 × 104C/mol 2.0×10-2mol答 (2) 陽極で起こる反応は,次のようになる。 陽極 2H2O O2 + 4H + + 4e_ 4mol で O2 (分子量 32) が 1mol 生成するので, 1 0.020 mol× =5.0×10-3mol の量 (mol) (3) 陰極で起こる反応は,次のようになる。 陰極 Cu²+ + 2e - → Cu O2, 5.0×10-3mol答 2mol で Cu (原子量 63.5) が 1mol 生成する。 したがって、陰極で生成する物質とその質量は, 63.5g/mol ×0.020mol×12=0.635g Cu のモル質量 e-の量 (mol) Cu の量 (mol) Cu, 0.64g 類題 4 炭素電極を用いて, 塩化銅(ⅡI)水溶液を0.500Aの電流で電気分解した ところ,陰極に 1.27gの銅が析出した。発生する気体は水に溶解せず, ファラデー定数は 9.65×10C/mol として,次の問いに答えよ。 (1)流れた電子は何 mol か。 (2)陽極で発生した気体の体積は標準状態で何Lか。 (3)電気分解していた時間は何秒間か。

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TOEIC・English Undergraduate

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.

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TOEIC・English Undergraduate

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.

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