General comments. This study presents a good overview of the CaCO3 polimorph precipitation in corals skeletal formation, investigating the ability of corals to switch from aragonite to calcite precipitation, especially in their early developmental stages in response to changing seawater chemistry. Mg/Ca ratio, temperature and pCO2 has been already recognized as the most important factor affecti...

A synthetic Topopah Spring Tuff water representative of one type of pore water at Yucca Mountain, NV was evaporated at 95 °C in a series of experiments to determine the geochemical controls for brines that may form on, and possibly impact upon the long-term integrity of waste containers and drip shields at the designated high-level, nuclear-waste repository. Solution chemistry, condensed vapor ...

Metal oxides play a very important role in many areas of chemistry, physics and materials science.The metal elements are able to form a large diversity of oxide compounds. In this investigation, wesynthesis SnO2 and C,N,S-tridoped SnO2 nanoparticles by precipitation method. The synthesizedSnO2 and C,N,S-tridoped SnO2 nanoparticles were characterized by instrumental analysis methods,such as X-ra...

metal oxides play a very important role in many areas of chemistry, physics and materials science.the metal elements are able to form a large diversity of oxide compounds. in this investigation, wesynthesis sno2 and c,n,s-tridoped sno2 nanoparticles by precipitation method. the synthesizedsno2 and c,n,s-tridoped sno2 nanoparticles were characterized by instrumental analysis methods,such as x-ra...

Introduction: Fluid inclusions are micron-scale volumes of fluid entrapped during the precipitation of minerals. Fluids are entrapped during primary mineral growth, and during healing of later fractures. The water in fluid inclusions in minerals precipitated in the upper crust of Mars contains a record of the ambient environment during precipitation. This includes data on fluid temperature and ...

We evaluated precipitation quantity and inorganic N deposition from wetfall at the Saddle site on Niwot Ridge, an alpine location in the Colorado Front Range of the Rocky Mountains. The chemical content of precipitation was collected with an Aerometrics wet-only deposition collector and precipitation amount was collected in a co-located Fergusson-type weighing gauge with a wind shield. Calculat...

Abstract The extent of a chemical reaction has received little attention in the early stages of Chemistry teaching, despite allowing a general way to work with chemical reactions and equilibria. In this article, the concepts of extent of reaction and extent of reaction balances are revised and several applications to study the change in the concentrations of the species involved in chemical rea...

Understanding the effects of climate change including precipitation patterns has important implications for evaluating the biogeochemical responses of watersheds. We focused on four storms in late summer and early fall that occurred after an exceptionally dry period in 2002.We analyzed not only the influence of these storms on episodic chemistry and the role of different water sources in affect...