Now showing items 1934-1953 of 3036

    • Lección de Química # 19 Equilibrio químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Reactions in balance may be disturbed such as changes of temperature, volume, quantity of substance or pressure. The reaction will try to redress the balance, this principle is known as the law of Le Chatelier.
    • Lección de Química # 2 Nomenclatura Inorgánica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Nomenclature hydracids acids which are formed by nonmetal and hydrogen, acids and oxyacids containing oxygen in their structure.
    • Lección de Química # 20 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      When some solids are mixed with water the following cases occur: if the substance is completely dissolved and conducts electricity this substance is classified as a strong electrolyte, if is partially dissolved and conducts ...
    • Lección de Química # 21 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Hydrolysis is a phenomenon that occurs when an ionic substance breaks his bond on contact with water.
    • Lección de Química # 22 Equilibrio iónico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      weak acids and bases in aqueous solution present ion chemical balance and it is vital for many biological and industrial processes where water is used.
    • Lección de Química # 23 Equilibrio iónico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The buffer solutions are solutions with the ability to regulate a desired pH, for this process is important have an acid or a weak base, with its own counterion.
    • Lección de Química # 24 Reacciones ácido base 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Gaseous detachment, precipitation, warming and color change, are evidence that there was a chemical change process, but some reactions do not generate such changes as is the case of an acid base reaction, in this case a ...
    • Lección de Química # 25 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The electrochemical reactions are chemical reactions that need or produce electricity.
    • Lección de Química # 26 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The electrolytic cell is a device used for reactions that require electrical energy to occur.
    • Lección de Química # 27 Electroquímica 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The Nernst equation is used when the electrochemical reactions do not occur in standard conditions. (25 ° C, 1 atm, 1M)
    • Lección de Química # 3 Reacciones químicas 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      nomenclature and assignment of oxidation numbers in compounds substances by systematic, stock and traditional methods.
    • Lección de Química # 4 Enlace químico 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      In covalent bonds the nuclei involved share electrons.
    • Lección de Química # 5 Reacciones químicas 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Balancing chemical equations using the Oxidation Reduction method comprises assigning oxidation number in each participating element.
    • Lección de Química # 6 Reacciones químicas 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The ion electrón method is used when the chemical equation is presented as ionic equation.
    • Lección de Química # 7 Reacciones químicas 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      Chemical equations are pictorial representations of a chemical process where chemical change occurs.
    • Lección de Química # 8 Estequiometria 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      The stoichiometry is the area of ​​chemistry takes care of the quantitative ratios in a chemical reaction, that is the ratio between the quantities of reactive substances or produced.
    • Lección de Química # 9 Estequiometria 

      Lopez-Díaz, L. (Laura) (Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-27)
      From the ideal gas laws some substances that are subject to decomposition by stoichiometric calculations are identified.
    • Lección Estática # 1 Equilibrio de partícula 

      Ospina-Muñoz, W. A. (Walter Antonio) (Escuela de Ingeniería de Antioquia EIA, 2014-06-12)
      Introduction to vectors, strength and location of the particle in three dimensions.
    • Lección Estática # 10 Equilibrio de cuerpo rígido 

      Ospina-Muñoz, W. A. (Walter Antonio) (Escuela de Ingeniería de Antioquia EIA, 2014-06-12)
      Application of rigid body equilibrium. Momentum balance
    • Lección Estática # 11 Ejercicio equilibrio de cuerpo rígido 

      Ospina-Muñoz, W. A. (Walter Antonio) (Escuela de Ingeniería de Antioquia EIA, 2014-06-12)
      Application of rigid body equilibrium. External forces. Momentum balance