![]() ![]() And how many core electrons does it have? And the core electrons In the outermost shell? You have six electrons here. So the outermost shell is beingĭescribed right over here, this second shell. How might oxygen react, it's interesting to look at Up all the electrons here, I have exactly eight electrons. So I have four right now, I have to have four more, so then you're going to have 2p4. Well, in a neutral oxygen atom, you have eight protonsĪnd eight electrons, so first you're gonna fill the one shell, then you are going to startįilling the second shell, so you're gonna go 2s2, So oxygen's electronĬonfiguration is what? Pause this video and see if ![]() And so just to make that point, or make it a little bit clearer, let's look at the electron configuration of an element that we'll Or how a given element is likely to react with other atoms. Is, what is the point? And the point of electronĬonfigurations is, is they can give us insights as to how a given atom Might have been asking yourself this whole time that we've been looking at electron configurations We are now going to talk about valence electrons, and non-valence electrons, whichĪre known as core electrons and so one question that you Once you reach the fourth period and the transition metals they follow an 18 electron rule of stability, but it's the same idea as before in that they are attempting to fill their valence electron shells in order to become stable. This octet rule holds for elements in the second and third periods (or rows) of the periodic table. This need to gain a filled valance electron shell by having 8 valence electrons is known as the octet rule and explains why certain elements are stable or unstable despite being electrically neutral. Neon has 8 valence electrons which is a filled second electron shell and is therefore stable and will be unreactive since it does not need to take electrons from other atoms. And again this can be explained by neon's valence electron configuration which is: 2s^(2)2p^(6). Now if we take a neutral atom of neon, Ne, which is just to the right of fluorine, neon is practically the opposite of fluorine in terms of reactivity despite both being neutral atoms. In other words, it will react in such a way to gain a new electron and fulfill its valence shell. And since it's so close to being filled, it will desperately want an extra electron which it will take from any nearby atom to do so. But fluorine has 7 valence electrons, 1 away from being filled. The second electron shell holds a maximum of 8 electrons and 8 electron would be considered a filled valence shell and would therefore be stable and unreactive. And this is explained if we look at fluorine's valence shell (the second shell) electron configuration: 2s^(2)2p^(5). For instance, if we take an atom of fluorine, F, in it's neutral state it has no net charge however it is VERY reactive. So even if an atom is neutral, that is not necessarily its most stable state. And vise versa, something which is unstable is reactive and will engage in chemical reactions to reach a new state. Stability meaning that something is unreactive, that it won't engage in some kind of chemical reaction to reach a new state. The valence shell meaning the outermost electron shell. So being stable when talking about valence electrons means that the valence shell has been filled completely (or half filled). ![]()
0 Comments
![]() All the suggestions and requirement details from the customers are taken into consideration as for us customer satisfaction is essential. Spreadsheet Template Free Budget Spreadsheet. All the documents are compatible for the versions. Replying to evajimenez797 Heres how to find some great free budget templates from microsoft Excel. Feel free to download, modify, and use any you like. On this page, youll find the most effective expense report templates for Excel, including a simple expense report template, an expense tracker template, a. ![]() > ConclusionĪll type of expense tracker templates are available and in both the format document and pdf. Our Excel invoice templates are a simple and easy way to send professional-looking invoices to clients. Details of cash recipt or bill should to track in the expense tracker. Just like that, you can have any color you’d like in your Excel business expense template. All we do is select the data bar you want to change, and on the Home ribbon select the color you’d like to use with the Fill Bucket button. It would be beneficial to trac the payment of each expense. I also like to change the colors of my data barsthis is a great tip to know if you ever want to match it to your own branding. The expense tracker can be create easily with the simple format for certain period of the time and it include the details about the date on which expense incurred, paid by cash or cheque and paid by whom and for what purpose.
![]() ![]() Thumbnail to rearrange pages by drag and drop PDF Form Maker with Field Recognition, Multiple Copying, Table Order and Calculation Order PDF Ink Annotator to write, draw, mark or highlight using the pen input PDF Form Filler to save fill-in PDF forms with data import, export, batch or auto fill PDF Filler to add Text, Checkmark, Image, Hyperlink, Whiteout, Highlight and PDF Overlay PDF Comments to add Stamps, Comments, Highlight, Strikethrough, Squiggly, Link, drawings, and 3D PDF Drawing to add basic shapes, curves or signature PDF Barcode to insert barcodes PDF scanner to Scan Paper Form PDF Action to add URL, Form Reset and Submit, JavaScript and Navigation PDF Layer to allow the added PDFill objects visible or invisible Tools for Multiple selections, Precise Alignment, Spell-Checker, Curve Eraser, Batch Commands and Tabbed Toolbars Comes with a free PDF writer to create PDF or Image from any printable program, and free PDF Tools to merge, split, reorder, encrypt, decrypt, rotate, crop, reformat, header, footer, watermark. PDF translator is the best way to convert PDF documents to text file as PDF to text converter. PDF-XChange Editor has had 2 updates within the past 6 months. iTop PDF has had 0 updates within the past 6 months. Download PDF-XChange Editor for Windows to create, view, refine, annotate, and digitally sign PDF files with feature-rich PDF editor. PDF Document Management to Insert, Replace, Delete, Renumber, Extract, Move, Rotate and Crop PDF Pages, to Add Bookmark, Header, Footer, Watermark, Attachment, Action, JavaScript, Digital Signature, and Bates Numbering, to optimize PDF and extract into Text and Image. Download iTop PDF for Windows to view, edit, comment, convert, and protect PDF documents with a striking balance between ease of use and features. Download or export your edited PDF in Word, Excel, JPG, or PPT. ![]() Rearrange, extract, and split pages from the Organize tab. View, sign, collaborate on and annotate PDF files with our free Acrobat Reader software. Edit existing text from the Edit tabthis is a Pro feature. Adobe Acrobat - the original PDF editor and reader - is a powerhouse, filled with every tool needed for creating, editing, and. Add text, images, and annotations from the Mark up tab. Adobe Acrobat DC: Best PDF editor overall. Enter the new fields name and, optionally, the default value. ![]() Click on the desired form field type and place it on the page. Edit the original texts, image, form and comment PDF Redaction or PDF Eraser to remove the original sensitive content Group/Lock/Save the PDFill Objects Save into PDF with options Resume the project later. Drop and upload your PDF document into the PDF Editor. Click on Forms in the top menu and select the type of form input you want to add: Text, Multiline Text, Dropdown, Checkbox, Radio choices. ![]() ![]() ![]() § 8.36.14 All men are by nature so constituted as to grieve more over insults offered them than they rejoice over benefits conferred upon them therefore they attack those who have injured them more readily than they requite those who have shown them kindness. And in order to make sure that the articles of the agreement were ratified also by the senate, they retained six hundred of the knights as hostages. They killed none of them, however, but took away their arms and horses and everything else they had save one garment, and released them, thus stripped of their possessions, under an agreement that they should leave Samnite territory and be their allies on an equal footing. The nature of the yoke has already been described by me above. For the Samnites, who were badly frightened and thought their failure to gain terms a calamity, fought with desperation and by planting an ambuscade in a rather narrow valley they both captured the camp and seized alive the whole force of the Romans, all of whom they sent under the yoke. Thus the Romans, expecting in their extreme arrogance to capture them all at the first blow, succumbed to a terrible disaster. Yet they did not obtain the desired peace, being accounted untrustworthy instead, the victors, though they had received the prisoners, voted for relentless war against them. They sent them all the captives that they had, and ascribed the responsibility for the war to Rutulus, a man of great influence among them and since he had anticipated their vengeance by destroying himself, they scattered abroad his bones. They were attacked anew by the dictator Aulus Cornelius, and being defeated, made proposals for peace to the men at Rome. But when he had resigned his command they again rose in arms. ![]() After this Papirius, as dictator, with Fabius Rullus, as master of the horse, was sent out against the Samnites and by defeating them compelled them to agree to such terms as he wished. One of these leaders was Lucius Papirius, also called Cursor from his physical prowess (he was a very fleet runner) and on account of his practising running. So great a reversal of fortune did they experience. ![]() The Romans, who were so extremely arrogant as to vote that they would not again receive a herald from the Samnites in the matter of peace and moreover expected to capture them all at the first blow, succumbed to a terrible disaster and incurred disgrace as never before while the enemy, who were badly frightened to begin with, and thought their failure to gain terms a great calamity, captured alive the entire Roman army, and sent them all under the yoke. § 8.36.10 Among the many events of human history that might give one cause for wonder must certainly be reckoned what occurred at this time. ![]() ![]() As a result, the area of △BDF is twice the area of △DFE. So △ABF and △DEF are similar triangles and AB/ED=BF/FE.īut the ratio AB/ED is the same as BC/BE, because △ABC and △BDE are similar triangles with a scale factor of 1:2, so AB/ED=2/1=BF/FE, and we have shown that BF=2FE. ![]() ∠AFB ≅ ∠DFE because they are vertical angles. m∠ABF=m∠DEF=60°, since △ABC and △BDE are both equilateral triangles. Now let's look at two triangles where FE and BF are sides - △ABF and △DEF. △ABC and △BDE are both equilateral triangles, so they are similar triangles, and the scale factor is 1:2. To show that BF=2FE, we will use similar triangles, and the hint we have is that we already have two line segments with that ratio: BE=EC, so BC=2BE. Also the Pythagorean theorem can be used for non. For two triangles to be similar the angles in one triangle must have same value as the angles in another triangle. If another triangle can be divided into two right triangles (see Triangle), then the area of the triangle may be able to be determined from the sum of the two constituent right triangles. Here, the triangles whose areas we are asked to compare (△BDF and △DFE) have the same height, DG, so their areas will be proportional to the length of their bases, BF and FE. All isosceles right triangles are similar since corresponding angles in isosceles right triangles are equal. In a previous similar problem, we noted that problems that require finding the ratio of areas often rely on using similar triangles, or on triangles that have the same base or same height. Show that the area of △BDF is twice the area of △DFE. △ABC and △BDE are both equilateral triangles. We will use this in the following geometry problem. ![]() So by definition, all regular polygons with the same number of sides are similar to each other.Īn equilateral triangle is a regular polygon with 3 sides, so all equilateral triangles are similar. A regular polygon is one in which all angles are equal and all sides are equal. ![]() ![]()
![]() ![]() By backing up your Google Authenticator codes, you can restore them to a new device and continue using 2FA without any hassle. Device loss or damage: Losing your device or damaging it beyond repair can result in losing access to your accounts.Here are a few reasons why you should consider backing up your Google Authenticator: Google Authenticator provides an added layer of security to your online accounts, but what happens if you lose your device or accidentally uninstall the app? That’s where the importance of backing up your Google Authenticator codes comes into play. Why should you backup Google Authenticator? In the next sections, we will explore different methods to backup your Google Authenticator codes, thereby ensuring access to your accounts even in unforeseen circumstances. However, it’s important to have a backup plan in case you lose or replace your device. Using Google Authenticator significantly strengthens the security of your online accounts. It has become a widely adopted 2FA solution due to its simplicity, effectiveness, and trustworthiness. Google Authenticator is compatible with various online services, including popular platforms like Google, Facebook, Twitter, Dropbox, and many more. Additionally, Google Authenticator supports multiple accounts, allowing you to consolidate all your 2FA codes into a single app. This feature makes it a more secure option than SMS-based codes, which can be intercepted or delayed. Instead, it uses your device’s internal clock and a shared secret key to generate the code. What sets Google Authenticator apart from other 2FA methods is that it works offline without relying on network connectivity or SMS messages. When logging in to a supported website or service, you enter the TOTP generated by Google Authenticator to verify your identity. These passwords are generated every 30 seconds and are used only once. ![]() The app generates time-based one-time passwords (TOTP) that are unique to each account you have enabled with Google Authenticator. It adds an additional layer of security by requiring you to enter a generated code along with your username and password, making it more difficult for unauthorized individuals to gain access to your accounts. Google Authenticator is a free app developed by Google that provides two-factor authentication (2FA) to protect your online accounts. ![]() ![]() These are a great way to test yourself and familiarize yourself with course content. Use Practice Exams: Take advantage of CNA practice exams.Plan Accordingly: Know when your test date is, and plan your study sessions over a period of time. The written portion of the CNA exam is usually composed of 60 multiple-choice questions that must be answered within 90 minutes.Research: Research your exam provider, and understand the kinds of questions that will be asked of you. ![]() Luckily, there are several things you can do to make sure you are fully prepared on test day: The number of questions on the written test depends. Preparing for any exam can be difficult, but this exam can feel especially daunting, as it is often the first step in your medical career. The CNA exam is made up of two portions: Written Test Skills Test There are 3 main providers of the exam: NNAAP Prometric Headmaster Regardless of who your provider is, you will have both a written and skills test. Nurse aides are healthcare workers who tend to patients' basic needs. You may end up paying between $1,000 and $5,000 to complete your program. 24 chapters in Alabama Prometric CNA Test: Practice & Study Guide. Many programs charge tuition fees per credit hour. The biggest cost associated with the exam is the state approved training program. It will vary depending on your provider and which state you are in, but you can expect to pay between $90 and $100 to take the exam. What Costs are Associated with the CNA Exam?Īs with most exams, there will be a testing fee.
![]() ![]() Use the database credentials (database: traccar, database user: traccar, database password: YourPassword) you setup earlier to update the Traccar configuration file: $ cat Unzip the Traccar archive: $ sudo apt install unzip -y Install Traccar 4.14ĭownload Traccar 4.14, the latest stable release of Traccar for now: $ cd MariaDB > GRANT ALL PRIVILEGES ON traccar.* TO IDENTIFIED BY 'YourPassword' WITH GRANT OPTION MariaDB > CREATE USER IDENTIFIED BY 'YourPassword' In the MariaDB shell, create a database named traccar and a database user named traccar along with its password YourPassword for Traccar: MariaDB > CREATE DATABASE traccar CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci Log in to the MariaDB shell as root: $ sudo mysql -u root Create a Database and a Database User for Traccar Reload privilege tables now? y:key_enter:Ĥ.Remove test database and access to it? y:key_enter:.Disallow root login remotely? y:key_enter:.Change the root password? n:key_enter:.Switch to unix_socket authentication n:key_enter:.Enter current password for root (enter for none): :key_enter:.In the wizard, answer prompted questions as follows: Secure the installation of MariaDB: $ sudo mariadb-secure-installation Start the MariaDB service: $ sudo systemctl start rvice $ sudo add-apt-repository 'deb focal main' Use commands listed below to install MariaDB 10.6, the current stable version of MariaDB, on the Ubuntu 20.04 LTS system: $ sudo apt-get install software-properties-common dirmngr apt-transport-https -y Traccar needs to work with a Database Management System (DBMS), such as MariaDB, MySQL, or PostgreSQL. Having the server instance up and running again, log in as traccar from an SSH terminal for follow-on work.īe aware that the tasks mentioned above are for beginners only, and more security measures are at your discretion. Update and then restart the system: # apt update Set default firewall rules with UFW: # ufw default deny # echo 'traccar ALL=(ALL) NOPASSWD: ALL' tee -a /etc/sudoers.d/designated # echo '/swap none swap defaults 0 0' > /etc/fstabĬreate a normal user named traccar with sudo privileges: # useradd -ms /bin/bash traccar Log in to your server instance as root from an SSH terminal, and then perform basic tasks as follows to harden the system.Ĭreate a swap file: # fallocate -l 2g /swap Perform Basic Tasks on the Server Instance See detailed instructions on managing DNS through Vultr in this Vultr tutorial. ![]() To ease public access, you need to set up DNS records through your domain hosting service provider, pointing domain names (an apex domain name and one or more subdomain names) to the IPv4 address of your server.įor example, if you are hosting the apex domain name on Vultr, set up DNS records as follows to point and to the IPv4 address of your server in the DNS tab of the Vultr control panel: Entry #1 A registered domain name for public access.A fresh Vultr Ubuntu 20.04 LTS server instance with at least 2GB of memory.This tutorial explains how to set up a Traccar server on a Vultr Ubuntu 20.04 LTS server instance in a production environment. Providing detailed device location history, map routes, and reports as required.Sending alerts via the web, email, and Short Message Service (SMS) when abnormal conditions are detected, and.Tracking various types of GPS devices in real-time,.Demo server 4 sponsored by VPSDimeĭemo server 3 sponsored by Cobra Softwaresĭemo server 2 sponsored by TRIXServer.Traccar is a free and open-source Global Positioning System (GPS) tracking system that is capable of: If you need guaranteed uptime and full history for your servers, please check one of the subscriptions. Feel free to choose any of them, but the first server is usually busy as the Traccar Client is configured to use it by default. To get sample data you can use a GPS tracker or the Traccar Client app on your smartphone. You have to register your own account by clicking on the Register button on the login screen. There is no pre-defined demo user or sample data. If you are interested in those services, please check one of our subscription options. ![]() Demo servers don't have reverse geocoding or email service pre-configured. There are no limits on available features or number of devices. Demo servers are fully-featured instances of Traccar that you can use to track your GPS devices or phones. ![]() ![]() ![]() Unfortunately, the trailer is only available so far at Twitter available. Command Stance is a suite of broad buffs that can alternate between attack and defense bonuses, while Limit Combos appear to grant a damage multiplier if more than one Limit Break is used in a row. The Command Stance and Limit Combo features are new, giving players more options in Ever Crisis. The trailer also confirms the inclusion of Auto and Accelerated modes for easier grinding. Characters accumulate Action Points over time, which they can then use to trigger attacks, spells, or Materia abilities. The combat system is based on the ‘Active Time Battle’ system from the original Final Fantasy VII, with some optimizations for smartphones. KINGDOM HEARTS All-in-One Package includes: KINGDOM HEARTS HD 1.5 + 2.5 ReMIX. ![]() In the final instalment in the Xehanort saga, KINGDOM HEARTS III, all-new awe-inspiring Pixar worlds are added into the mix. Like every game in the series before it, Kingdom Hearts 3 begins by playing its theme. The story of KINGDOM HEARTS unfolds across many Disney worlds, featuring many famous Disney characters. This one is dedicated to the game’s combat system and offers a look at the various mechanics and some nifty animations. GameSpot may get a commission from retail offers. Square Enix has a new trailer for Final Fantasy VII Ever Crisis revealed. ![]() |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |