Hi, If you have not deleted browsing history for past 10 months then you can check the following location to search for the history: History files would be in the location if âDays to keep pages in historyâ is set to more than 10 months days. a. Open Internet Explorer. b. Click on Tools menu and select Internet options.
Carbon is also found in coal, petroleum, and natural gas. Carbon is one of the most important elements on the periodic table (at least from the perspective of organic chemists!).
Gas concentrations are in. percent by volume. Crude oil can contain minor amounts of sulfur, nitrogen and oxygen containing organic compounds as well as trace. amounts of heavy metals, such as mercury, arsenic, nickel, and vanadium. Naturally occurring radioactive materials (NORM) may also be. present.