Interaction of Oxygen and Carbon Dioxide with Hemoglobin at the Molecular Level

On the basis of responses to written questions administered to more than one thousand introductory chemistry students, we claim that students often rotely apply memorized combustion rules instead of reasoning based on explanatory models for what happens at the molecular level during chemical reactions. In particular, many students argue that combustion produces carbon dioxide and/or water, even when the reactants do not contain hydrogen or carbon, an answer that is inconsistent with the principle of atom conservation. Our study also corroborates the finding that students frequently say that oxygen is “necessary for” or “used in” combustion reactions without connecting this reasoning to conservation principles, suggesting that this likewise may be a rotely applied, memorized rule.

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Proton Transfer Step in the Carbon Dioxide Capture by Monoethanol Amine: A Theoretical Study at the Molecular Level

The Journal of Physical Chemistry B ◽

10.1021/jp212225r ◽

2012 ◽

Vol 116 (7) ◽

pp. 2244-2248 ◽

Cited By ~ 27

Author(s):

Kenji Iida ◽

Hirofumi Sato

Keyword(s):

Carbon Dioxide ◽

Proton Transfer ◽

Theoretical Study ◽

Molecular Level ◽

Carbon Dioxide Capture ◽

Monoethanol Amine ◽

Transfer Step

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DFT studies for the evaluation of amine functionalized polystyrene adsorbents for selective adsorption of carbon dioxide

RSC Advances ◽

10.1039/c4ra00444b ◽

2014 ◽

Vol 4 (39) ◽

pp. 20323-20333 ◽

Cited By ~ 12

Author(s):

Rupa Shantamal Madyal ◽

Jyotsna Sudhir Arora

Keyword(s):

Carbon Dioxide ◽

Molecular Level ◽

Selective Adsorption ◽

Dft Studies ◽

Amine Functionalized

The current study provides molecular-level insights into the CO2–amine functionalized polystyrene complexes, enabling design of newer CO2 selective adsorbents.

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Carbon dioxide and propane nucleation: the emergence of a nucleation barrier

Physical Chemistry Chemical Physics ◽

10.1039/d0cp01771j ◽

2020 ◽

Vol 22 (28) ◽

pp. 15986-15998 ◽

Cited By ~ 1

Author(s):

Jan Krohn ◽

Martina Lippe ◽

Chenxi Li ◽

Ruth Signorell

Keyword(s):

Carbon Dioxide ◽

Molecular Level ◽

Nucleation Barrier

A direct molecular level study of CO2 and C3H8 nucleation indicates a transition from barrierless to barrier-limited nucleation.

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Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010005113x ◽

1974 ◽

Vol 32 ◽

pp. 224-225

Author(s):

K. C. Tsou ◽

J. Morris ◽

P. Shawaluk ◽

B. Stuck ◽

E. Beatrice

Keyword(s):

Carbon Dioxide ◽

Electron Microscope ◽

Rhesus Monkey ◽

Carbon Dioxide Laser ◽

Cytochemical Study ◽

Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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The Critical Point Drying Method Applied to Scanning Electron Microscopy of L-929 Cells

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068382 ◽

1970 ◽

Vol 28 ◽

pp. 278-279

Author(s):

Charles TurnbiLL ◽

Delbert E. Philpott

Keyword(s):

Electron Microscopy ◽

Carbon Dioxide ◽

Surface Tension ◽

Critical Point ◽

Freeze Drying ◽

Attractive Alternative ◽

Crystal Formation ◽

Critical Point Drying ◽

Time Required ◽

Scanning Electron

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.

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