Phosphoric acid is heated with a sodium halide to make the hydrogen halide and sodium phosphate. It is used to react with rust to make black iron(III) phosphate, which can be scraped off, leaving pure iron.
Select an entire document by using the mouse. To select the entire contents of the document body, do one of the following: On the Home tab, in the Editing group, click Select, and then click Select All. Move the pointer to the left of any text until it turns into a right-pointing arrow, and then triple-click.
Press the Alt and F keys on your keyboards simultaneously to open the Word Options window. Click the Customize Ribbon option and press the Tab key on your keyboard until the Customize option is highlighted. Click on the Commands button to pull up a list of commands for Microsoft Word.lick on the Keyboard button located in the bottom-right corner of the pop-up window. Open the category and command of the shortcut key you wish to turn off. If there are any shortcuts associated with the command, it will appear under the Current Key section of the window.