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.
Report Abuse. The proper way is to select Shut Down and wait. The main reason is that if you unplug it, the Hard drive of the computer may go bad because its in working state when you pull the plug. Also, there can be problems like Windows crashing, Blue screen messages. Please do not pull the plug directly.