Alka-Seltzer Fizzing-Determination of Percent by Mass of NaHCO3 in Alka-Seltzer Tablets. An Undergraduate General Chemistry Experiment

2002 ◽  
Vol 79 (7) ◽  
pp. 848 ◽  
Author(s):  
Yueh-Huey Chen ◽  
Jing-Fun Yaung
Keyword(s):  
General Chemistry ◽  
Chemistry Experiment

A general chemistry experiment for the determination of the oxygen content of air

1981 ◽  
Vol 58 (10) ◽  
pp. 804 ◽  
Author(s):  
James P. Birk ◽  
Larry McGrath ◽  
S. Kay Gunter
Keyword(s):  
General Chemistry ◽  
Oxygen Content ◽  
Chemistry Experiment

A Master Class in Dimensional Analysis: the Universal Gas Constant

2018 ◽  
Author(s):  
john andraos
Keyword(s):  
Physical Chemistry ◽  
High School ◽  
General Chemistry ◽  
Dimensional Analysis ◽  
Undergraduate Students ◽  
Microsoft Excel ◽  
Energy Unit ◽  
Spreadsheet Program ◽  
Volume Unit

We present a spreadsheet-assisted exercise using Microsoft Excel software for the<br>determination of the universal gas constant, R, in 35,712 different units. This large<br>number of units arises from a simple enumeration of possible pressure-volume unit<br>combinations and energy unit combinations covering SI (metric), Imperial (British), and<br>American units. In turn, various units for force and area used for defining pressure, and<br>various units for force and distance used for defining energy are explored. This<br>presentation serves as an excellent exercise for high school and undergraduate students to<br>master the skill of dimensional analysis, unit conversions, and basic combinatorics in<br>general chemistry and physical chemistry courses. Instructors can also use the described<br>exercise of constructing conversion matrices to train students in how to efficiently use the<br>Microsoft Excel spreadsheet program.

scholarly journals A General Chemistry Experiment: Constructing Simple Photovoltaic Cells

Daxue Huaxue ◽  
2021 ◽  
Vol 0 (0) ◽  
pp. 2109109-0
Author(s):  
Yanzi Ma ◽  
Kaiguo Ma ◽  
Li Jia ◽  
Haihong Wang ◽  
Weihong Li
Keyword(s):  
General Chemistry ◽  
Photovoltaic Cells ◽  
Chemistry Experiment

scholarly journals Determination of the number of radicals in the initial chain reactions by mathematical methods

2009 ◽  
Vol 63 (2) ◽  
pp. 121-127
Author(s):  
Branko Pejovic ◽  
Milovan Jotanovic ◽  
Vladan Micic ◽  
Milorad Tomic ◽  
Goran Tadic
Keyword(s):  
General Chemistry ◽  
Difference Equation ◽  
Analytical Form ◽  
Mathematical Methods ◽  
Linear Difference Equations ◽  
Efficient Procedure ◽  
Chain Reactions ◽  
Chemical Equation ◽  
The Difference

Starting from the fact that the real mechanism in a chemical equation takes places through a certain number of radicals which participate in simultaneous reactions and initiate chain reactions according to a particular pattern, the aim of this study is to determine their number in the first couple of steps of the reaction. Based on this, the numbers of radicals were determined in the general case, in the form of linear difference equations, which, by certain mathematical transformations, were reduced to one equation that satisfies a particular numeric series, entirely defined if its first members are known. The equation obtained was solved by a common method developed in the theory of numeric series, in which its solutions represent the number of radicals in an arbitrary step of the reaction observed, in the analytical form. In the final part of the study, the method was tested and verified using two characteristic examples from general chemistry. The study also gives a suggestion of a more efficient procedure by reducing the difference equation to a lower order.

Determination of Calcium Content in Calcium Tablet by Microscale Chemistry Experiment

2012 ◽  
Vol 518-523 ◽  
pp. 1375-1378
Author(s):  
Yu Guo Zhuo ◽  
Jun Liu
Keyword(s):  
Calcium Content ◽  
Routine Analysis ◽  
Determination Method ◽  
Relative Standard ◽  
Chemistry Experiment

The determination method of calcium content in calcium tablet using the micro titration has introduced, and also has compared the obtaining results by the microburette and by the routine analysis. F examination and t examination are all in the appropriate scope. The relative standard de-viation is less than 0.3%. There is no obvious difference in the results.

Analysis of Iron in Ferritin, the Iron-Storage Protein: A General Chemistry Experiment

1998 ◽  
Vol 75 (4) ◽  
pp. 437 ◽  
Author(s):  
Maureen J. Donlin ◽  
Regina F. Frey ◽  
Christopher Putnam ◽  
Jody Proctor ◽  
James K. Bashkin
Keyword(s):  
General Chemistry ◽  
Storage Protein ◽  
Protein A ◽  
Iron Storage ◽  
Chemistry Experiment ◽  
Iron Storage Protein
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