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.
Similarly, a computer might slow down because of outdated hardware, because it has too many software programs running, or due to a piece of malicious software, known as malware or a computer virus. Drivers and Firmware