Lignite has a colorific value of less than 5 kw/kg approximately.
Subbituminous coalSubbituminous coal is also called black lignite. Subbituminous coal black and contains 20-30 % moisture. Subbituminous coal is used for generating electricity and space heating.Subbitumnious coal has calorific values ranging from 5 - 6.8 kW/kG approximately.
Bituminous coalBituminous coal is a soft, dense, black coal. Bituminous coal often has bands of bright and dull material in it. Bituminous coal is the most common coal and has a moisture content less than 20 %. Bituminous coal is used for generating electricity, making coke, and space heating.
Bituminous coal has calorific values ranging from 6.8 - 9 kW/kG approximately.
Anthracite coal
Often referred to as hard coal, anthracite is hard, black and lustrous. Anthracite is low in suplhur and high in carbon. It is the highest rank of coal. moisture content generally is less than 15 %.
Anthracite has a calorfific values of around 9 kW/kG or above.
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There are actually several different types of RAGA. Some of these include six-note RAGAs, seven-note RAGAs, pentatonic RAGAs, and eight-note RAGAs.
each pipe is a different length.... the shorter the pipe the higher the note....the longer the pipe the lower the note...
Science is vitally important to our understanding of the world around us. As students learn science as a subject in school, they learn information about the chemical elements, the history of earth, and the ways in which the body works.
It is the belief that all material is made of a combination of the four basic "elements": Earth, Wind, Water and Fire. Different cultures have different versions of this theory, but the concept is basically the same in all of them. On a side note, alchemy was based off this theory. It was disproved by modern technology with the discovery of subatomic particles and the different chemical elements.
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There are about a dozen different varieties of US Note in the 1928 series. Please post a new, separate question with the bill's denomination and what letter if any is next to the date. You don't need to include the serial number, though.
Short Note - album - was created in 1981-01.
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A lump of coal or a note from Santa reminding them to be good next year.
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