Basics of Hydrocarbon Chemistry. Crude oil is a mixture of hydrocarbon molecules, which are organic compounds of carbon and hydrogen atoms that may include from one to 60 carbon atoms. The properties of hydrocarbons depend on the number and arrangement of the carbon and hydrogen atoms in the molecules.
Why does my download stop before it is finished? When a user experiences an issue while downloading files, it is usually a problem with the connection to their Internet service.
Over time, temporary files can slow down Internet browsing and computer performance. 1  Start your Norton product. 2  In the Norton product main window, click , and then click 3  . After the temporary files are removed, click 4  . To open the Clear browsing data window on Google Chrome, press the + + keys on your keyboard.