When was the pycnometer invented

These relationships also show up in the Periodic Law. Dmitri invented Pyrocollodion, a smokeless powder that is combustible and it is also very efficient. The Russian navy even decided to use it for their weapons. Dmitri also invented the Pycnometer, a laboratory device that is used to measure density. It uses gas displacement to measure the volume and then you use that information to find the density of the object.

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We may use the provided email to contact you if we have additional questions. See our privacy statement. Skip to main content. A pycnometer is such a tool. It is a carefully calibrated glass container with a close-fitting stopper.

Since the volume is accurately known, a simple mass balance may be used to determine the mass of your unknown liquid. There are also techniques available for measuring the density of a non-soluble powder, using the same apparatus. In normal use, the pycnometer is filled with your unknown fluid, and weighed. Then the device is cleaned thoroughly of any residue, and a reference fluid such as water or mercury is used to fill the pycnometer.

Simple arithmetic suffices to work out the density of the unknown material. Sometimes called the 'specific gravity bottle'. Examples: burette, pipette, oven, crucible, distillation apparatus, beakers, flasks, filtering equipment, thermometer, pycnometer, densimeter, vials etc.

Examples: balance, viscometer, densimeter, thermometer, pipette, burette, refractometer, nephelometer, pyrometer, pycnometer, sclerometer, pH-meter, conductometer, etc. A gas pycnometer operates by detecting the pressure change resulting from displacement of gas by a solid object. Expanding a quantity of gas at known pressure into an empty chamber and measuring the pressure establishes a baseline.

Then a sample is placed in the chamber and the chamber is resealed. The same quantity of gas at the same pressure is again expanded into the sample chamber, and the pressure is measured.

The difference in the two pressure combined with the known volume of the empty sample chamber allows the volume of the sample to be determined by way of the gas law. G of cement can be find out from Le Chaterlier"s flask, weighing balance, kerosene. As the same above procedure S.

G of sand find out by using pycnometer.. For a granular material you need a helium pycnometer. Or - more simple, if it is possible - a graduate cylinder for the measure of the volume by the displacement of water. Log in. Study now. See Answer. Best Answer. Study guides. Scientists 20 cards. How has technology changed farming. Who is considered the father of modern art criticism. Which is an example of matter cycling through the bodies of living things.

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