General Science First Course
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In our eReader you can find the full English version of the book. Read General Science First Course Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book General Science First Course
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We have learned that the pressure of a gas is due to the blows struck by an enormous number of molecules moving at high speed. To decrease the volume one-half is to double the density, and when double the number of molecules strike against the same area of the surface of the containing vessel the pressure is doubled. By calculation it has been found that air molecules under normal conditions move at the rate of about 445 meters (1390 feet) per second, while hydrogen molecules have the enormous ...speed of 1700 meters (5500 feet) per second. The speed of a cannon- ball is seldom greater than 800 meters per second. Since molecules move at such high speed, it is easy to under- stand why gases produce pressure and move almost instantly into the space left by the rising piston of an air pump, and why any gas always fills completely the vessel containing it.
110. Compressed Gases. *- Gases are perfectly elastic and can be compressed or made more dense; that is, a given weight of gas can be made to occupy less space if pressure is put upon it.
What to read after General Science First Course?
You can find similar books in the "Read Also" column, or choose other free books by Lewis Elhuff to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
We have learned that the pressure of a gas is due to the blows struck by an enormous number of molecules moving at high speed. To decrease the volume one-half is to double the density, and when double the number of molecules strike against the same area of the surface of the containing vessel the pressure is doubled. By calculation it has been found that air molecules under normal conditions move at the rate of about 445 meters (1390 feet) per second, while hydrogen molecules have the enormous ...speed of 1700 meters (5500 feet) per second. The speed of a cannon- ball is seldom greater than 800 meters per second. Since molecules move at such high speed, it is easy to under- stand why gases produce pressure and move almost instantly into the space left by the rising piston of an air pump, and why any gas always fills completely the vessel containing it.
110. Compressed Gases. *- Gases are perfectly elastic and can be compressed or made more dense; that is, a given weight of gas can be made to occupy less space if pressure is put upon it.
What to read after General Science First Course?
You can find similar books in the "Read Also" column, or choose other free books by Lewis Elhuff to read onlineMoreLess
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