Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ladislav H. Berka"'
Autor:
Ilie Fishtik, Ladislav H. Berka
Publikováno v:
Journal of Chemical Education. 82:553
The principle of stoichiometric uniqueness provides a simple algorithm to check whether a simple redox reaction may be uniquely decomposed into half-reactions in a single way. For complex redox rea...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae683a710f56859ad906eb031f3f4ed1
https://doi.org/10.1021/ed082p553
https://doi.org/10.1021/ed082p553
Autor:
Ladislav H. Berka, Ilie Fishtik
Publikováno v:
Journal of Chemical Education. 81:584
It is demonstrated in this article that while the value of the free energy change for any chemical reaction is independent of path (a state function), the value of the standard cell potential of a reaction is dependent on the half-cell reactions used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f482eb614525ccb52d2df882d12693af
https://doi.org/10.1021/ed081p584
https://doi.org/10.1021/ed081p584
Publikováno v:
Journal of Forensic Sciences. 46:14974J
The purpose of this study was to ascertain the amount of stalking taking place on the Worcester Polytechnic Institute (WPI) campus in which computers play such a huge role in the lives of the students. Our results were then compared with those report
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e378d6260a7e507334fad3528ccb0aef
https://doi.org/10.1520/jfs14974j
https://doi.org/10.1520/jfs14974j
Autor:
Ladislav H. Berka, Karen M. Berka
Publikováno v:
Journal of Chemical Education. 73:931
A mini-project is described in which students give oral presentations of forensic science papers and case studies taken from the literature and/or the public media. The project also includes a practicing forensic chemist guest speaker, class discussi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475c1e4c462377f78aa2de25465c805e
https://doi.org/10.1021/ed073p931
https://doi.org/10.1021/ed073p931
Publikováno v:
Journal of Chemical Education. 73:675
An experiment is described in which students use headspace gas chromatography to isolate and identify arson accelerants using both liquid and char samples. In this way they gain the experience with an important GC technique, have an opportunity to us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cffb1fdf78f19d39a71e69b763605406
https://doi.org/10.1021/ed073p675
https://doi.org/10.1021/ed073p675
Autor:
Ladislav H. Berka, Nicholas K. Kildahl
Publikováno v:
Journal of Chemical Education. 72:258
Gas chromatography experiment that allows the discovery of the temperature dependence of the vapor pressure of a pure liquid; includes sample data and analysis.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df9c69a0ece4c2846a3d7bd2cd1e1e98
https://doi.org/10.1021/ed072p258
https://doi.org/10.1021/ed072p258
Autor:
Ladislav H. Berka, Nicholas K. Kildahl
Publikováno v:
Journal of Chemical Education. 71:613
Procedure that illustrates the liquid-vapor phase equilibrium of ideal and nonideal solutions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85c2a4eff4ad392e2b908c0120bce046
https://doi.org/10.1021/ed071p613
https://doi.org/10.1021/ed071p613
Publikováno v:
Journal of Chemical Education. 71:441
Comparing vapor pressures of nitrogen using a glass syringe with those from a Chempac laboratory / computer interfacing system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::731925fb7f238d31ea6c9356c8ec53ed
https://doi.org/10.1021/ed071p441
https://doi.org/10.1021/ed071p441
Autor:
Ladislav H. Berka, Nicholas K. Kildahl
Publikováno v:
Journal of Chemical Education. 70:671
Description of an experiment based on electronic absorption spectroscopy for general chemistry students that gives accurate results, conveys the excitement of discovery in experimental science, and illustrates key concepts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61d993df3988952812f4fae122d842a1
https://doi.org/10.1021/ed070p671
https://doi.org/10.1021/ed070p671
Publikováno v:
Journal of Chemical Education. 70:A100
Description of an experiment that uses both modern instrumentation and the discovery approach to learning with an introductory chemistry lab.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70df30317aff16ca590375bcc966e17a
https://doi.org/10.1021/ed070pa100
https://doi.org/10.1021/ed070pa100