This paper focuses on examples of educational tools concerning the learning of chemistry for engineering students through different daily life cases. These tools were developed during the past few years for enhancing the active role of students. They refer to cases about mineral water, medicaments, dentifrices and informative panels about solar power, where an adequate quantitative treatment th...

Particles present in the Earth’s atmosphere provide reactive surfaces for potentially important chemistry. The role of heterogeneous reactions of trace atmospheric gases on solid aerosol surfaces present in the troposphere is not well understood. Laboratory investigations can provide a basis for understanding the detailed molecularlevel physical chemistry of these atmospheric reactions. Kinetic...

Frequently in EPMA, the chemistry of an analyte (that is, the oxidation state and bonding of the elements in the material) is inferred from the composition, by stoichiometry or some other means. While this practice is usually adequate for determining the identity of pure single-phase materials, the results are often inconclusive when attempting similar analyses of complex mixtures composed of m...

Introduction: Eucrite meteorites represent earlyformed (~4.557-4.565 Ga) crustal basalts and basaltic to gabbroic cumulates from the howardite-eucritediogenite (HED) parent body or bodies (e.g., [1]). The HED are commonly thought to originate from the asteroid Vesta (e.g., [2-3]), although O-isotopes for eucrites [4] and diogenites [5] indicate more than one parent body. Approximately 85% of eu...

[1] We sought to determine the effect of elevated atmospheric CO2 on mineral weathering reactions in midlatitude carbonate-bearing forest soils of differing nutrient availability. Increased plant growth and soil respiration under elevated atmospheric CO2 suggest increased rates of carbon cycling, which may affect mineral weathering. A randomized complete block experiment was conducted, where as...

Injection of alkaline solutions in reservoir leads to mineral dissolution and precipitation, possibly resulting in changes in permeability and porosity, and consequently altering solution pH. Accurate prediction of pH, alkali consumption and aqueous chemistry changes are required to design suitable chemical blends in alkaline-polymer (AP) or alkaline-surfactant-polymer (ASP) flooding. Excessive...