Physical Sciences and Mathematics Commons^™

Concentration Of Atmospheric Ammonia From Kenyon College Monitoring Station, Vivian Ezeh, David Heithaus, Simon Garcia, Matthew F. Rouhier

Simon Garcia

Kenyon College is hosting an ammonia (NH3) monitoring station as part of the National Atmospheric Deposition Program (NADP). The Kenyon College (OH32) site is one of six locations around the state of Ohio.

Concentration Of Atmospheric Ammonia From Kenyon College Monitoring Station, Vivian Ezeh, David Heithaus, Simon Garcia, Matthew F. Rouhier

Matthew F Rouhier

Kenyon College is hosting an ammonia (NH3) monitoring station as part of the National Atmospheric Deposition Program (NADP). The Kenyon College (OH32) site is one of six locations around the state of Ohio.

Some Chemical, Physical And Physical And Chemical Properties Of High-Mountain Soils Of The Turkestan Ridge, M Tashkuziev

Karakalpak Scientific Journal

In the article on the basis of obtained results is revealed the relationship between humus content and composition of carbonates, the mechanical composition, the exchange capacity, and the composition of the absorbed bases.

Concentration Of Atmospheric Ammonia From Kenyon College Monitoring Station, Vivian Ezeh, David Heithaus, Simon Garcia, Matthew F. Rouhier

Data Sets

Kenyon College is hosting an ammonia (NH3) monitoring station as part of the National Atmospheric Deposition Program (NADP). The Kenyon College (OH32) site is one of six locations around the state of Ohio.

Audiobook Of A World From Dust, Ben Mcfarland

Faculty Open Access Books

A World From Dust is a popular science book about the chemical sequence behind the evolution of creation.

It’s about how geology, biology, and chemistry worked together over billions of years, providing a hidden order under the random flow of genes and lava and water.

It’s about the chemical job that each element takes up in life, and how that job is predictable from its place on the periodic table.

It can be told as the story of many elements: how iron and sulfur gave a spark of life; how manganese was a key for oxygen; and how copper and …

Reduction Of Ruviºn To Ruiii-Nh3 By Cysteine In Aqueous Solution, Qian Wang, Wai-Lun Man, William W. Y. Lam, Shek-Man Yiu, Man-Kit Tse, Tai‐Chu Lau

Faculty of Science & Technology (THEi)

The reduction of metal nitride to ammonia is a key step in biological and chemical nitrogen fixation. We report herein the facile reduction of a ruthenium(VI) nitrido complex [(L)RuVI(N)(OH2)]+ (1, L = N,N′-bis(salicylidene)-o-cyclohexyldiamine dianion) to [(L)RuIII(NH3)(OH2)]+ by l-cysteine (Cys), an ubiquitous biological reductant, in aqueous solution. At pH 1.0–5.3, the reaction has the following stoichiometry: [(L)RuVI(N)(OH2)]+ + 3HSCH2CH(NH3)CO2 → [(L)RuIII(NH3)(OH2)]+ + 1.5(SCH2CH(NH3)CO2)2. Kinetic studies show that at pH 1 the reaction consists of two phases, while at pH 5 there are three distinct phases. For all phases the rate law is rate = k2[1][Cys]. Studies on the effects of acidity …

Mechanism Of Water Oxidation By Ferrate(Vi) At Ph 7 – 9., Gui Chen, William W. Y. Lam, Po‐Kam Lo, Wai‐Lun Man, Lingjing Chen, Kai‐Chung Lau, Tai‐Chu Lau

Faculty of Science & Technology (THEi)

The kinetics of water oxidation by K2FeO4 has been reinvestigated by UV/Vis spectrophotometry from pH 7–9 in 0.2 m phosphate buffer. The rate of reaction was found to be second‐order in both [FeO42−] and [H+]. These results are consistent with a proposed mechanism in which the first step involves the initial equilibrium protonation of FeO42− to give FeO3(OH)−, which then undergoes rate‐limiting O−O bond formation. Analysis of the O2 isotopic composition for the reaction in H218O suggests that the predominant pathway for water oxidation by ferrate is intramolecular O−O coupling. DFT calculations have also been performed, which support the proposed …