1 Types of Chemical Reactions
1 Types of Chemical Reactions

... Chemical Changes are represented by word equations and chemical equations. When propane gas burns in air it produces carbon dioxide and water. The word equation for this reaction is: Reactants Products propane + oxygen => carbon dioxide + water are consumed are produced The chemical equation is: C3 ...
Ecology is the study of interactions among and with their environment
Ecology is the study of interactions among and with their environment

... made of carbon like coal and oil over millions of years. When humans burn fossil fuels, most of the carbon quickly enters the ____________________ as carbon dioxide. Natural processes such as _______________ also release carbon dioxide into the atmosphere. Carbon dioxide is a _____________ gas and t ...

Total organic carbon

Total organic carbon (TOC) is the amount of carbon found in an organic compound and is often used as a non-specific indicator of water quality or cleanliness of pharmaceutical manufacturing equipment. TOC may also refer to the amount of organic carbon in a geological formation, particularly the source rock for a petroleum play; 2% is a rough minimum. For marine surface sediments, average TOC content is 0.5 wt% in the deep ocean, and 2wt% along the eastern margins.A typical analysis for TOC measures both the total carbon present and the so-called ""inorganic carbon"" (IC), the latter representing the content of dissolved carbon dioxide and carbonic acid salts. Subtracting the inorganic carbon from the total carbon yields TOC. Another common variant of TOC analysis involves removing the IC portion first and then measuring the leftover carbon. This method involves purging an acidified sample with carbon-free air or nitrogen prior to measurement, and so is more accurately called non-purgeable organic carbon (NPOC).