How do you type the symbol for carbon dioxide on a computer?

Answer 1

Put your numeric lock on. Hold Alt and at the same time, on the numeric pad, type 0186 and release the alt key. There will be the degrees sign like this: º. Then you just have to type the c after it. Like this: 25ºC

Answer 2

Type a capital C

Then type a capital O

You will now have CO

Next type a 2

You will now have CO2

Then, depending on which computer system you are using, find the toolbar which enables you to modify the text/font.

Now 'block' the 2 in CO2 with your cursor.

Then go to the edit toolbar and select the subscript icon, the one with the X2 label. Click that, and CO2 will change to CO2

In Microsoft Word, an alternative to using the subscript icon is to use Ctrl + =

This means "hold the Ctrl button down and press the 'equals' key". This has the same effect as using the 'subscript' button.