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Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
Low-Flow Helmholtz Resonator For Molar Mass Detection, Brackman Amy, Amanda Kea, Kenneth Mcgill
Low-Flow Helmholtz Resonator For Molar Mass Detection, Brackman Amy, Amanda Kea, Kenneth Mcgill
The Corinthian
A simple apparatus was constructed for an undergraduate physical chemistry laboratory to determine a mathematical model of wavelike motion. The apparatus was assembled by attaching an airflow valve connected to a tank of argon gas to a GC column, thus creating regulated airflow. The air was manipulated to gently flow over a small sensitive microphone that was attached to an inexpensive resonator. A model will be developed to measure the speed of sound that will lead to the measurement of the molar mass.
Measuring The Pore Sizes Of Sol-Gels Using Argon Effusion Techniques, Thomas J. Noel Ii, Krista Mincey, Catrena Higginbotham
Measuring The Pore Sizes Of Sol-Gels Using Argon Effusion Techniques, Thomas J. Noel Ii, Krista Mincey, Catrena Higginbotham
The Corinthian
The rate of effusion of argon through a sol-gel scaffold will be measured to determine the size of the pores. The effusion rate will then be used to correlate initial pore size to any pore shrinkage that occurs. We will attempt to control the initial pore size by using various-sized paraffin beads as templates throughout the organically modified tetramethoxysilane (TMOS) gel scaffold. Polyethylene glycol (PEG) will also be used to prop open the pore openings and keep them from closing during the drying process.
Determining Crystal Thickness By Measuring Optical Rotation In Chiral Crystals, Cori Bruce, James Bish, Jamie Walker
Determining Crystal Thickness By Measuring Optical Rotation In Chiral Crystals, Cori Bruce, James Bish, Jamie Walker
The Corinthian
In this experiment, it will be shown that the linear relationship between pathlength and observed rotation can be applied to predict the pathlength based on the observed rotation. It should be noted, however, that the method devised will only work for chiral crystals. When aqueous NaC103 solution evaporates two rotamers will form that will rotate plane-polarized light in equal but opposite directions. Hence, the crystals must be separated to obtain linear correlations in regards to the two rotamers.