sábado, 17 de mayo de 2014
martes, 6 de mayo de 2014
domingo, 27 de abril de 2014
Elaboración de vinagre casero
Uno de los beneficios de realizar vinagre casero, es economizar y ahorrarse algo de dinero en lugar de comprarlo. Además, su elaboración no requiere ninguna dificultad de hacerse y tiene una capacidad de durabilidad de seis meses con refrigeración. La preparación de vinagre, requiere de tener una cascara de piña sin lavar, así como un litro de agua y un corcho en partes. Se tiene que agregar el agua, junto con la piña y el corcho, y dejarlo fermentar por dos semanas. Posteriormente, se debe hervir y agregarle vino blanco. El vinagre, tiene diversas utilidades, ya que se usa en las ensaladas como los adherezos y la elaboración de mayonesas.
Actividades de la práctica acerca de la Estequiometría
La lluvia ácida es una de las consecuencias de la contaminación del aire. Cuando cualquier tipo de combustible se quema, diferentes productos químicos se liberan al aire. El humo de las fábricas, el que proviene de un incendio o el que genera un automovil, no sólo contiene partículas de color gris , sino que ademas poseen una gran cantidad de gases invisibles altamente perjudiciales para nuestro medio ambiente.
martes, 8 de abril de 2014
Questions about the practice number nine
1. How does
the average ratio of mole water to moles salt as determined by your group
compare to the average mass determined by the class?
The mole ratio is the stoichiometric ratio of reactants and products and is the ratio of the coefficients for reactants and products found in the balanced chemical equation. The average ratio of reactants of mole water to products of moles salt affects in fact the mass which had been calculated during the practice because the grams of salt that was had weighed in the analytic balance were to be equal like the balanced of the equation. Another reason of these is that if it´s not correctly calculated the balanced between the ratio of mole water to moles salt it will get an error and the experiment could fail.
2. Could you use this procedure on an unknown hydrated salt? Explain why or why not.Yes it could be used because an unknown hydrated salt can be balanced in relation with the determination of their properties. It is not necessary to know what kind of salt is. Only is necessary get the mass of hydrated salt to follow the process before mentioned.
3. Could you use the procedure in quemistry lab to determine if an unknown salt was hydrated or anhydrous? Explain why or why not.Yes it could be used because some characteristics of the salt are determinate to know if it´s hydrated or anhydrous.
4. What color change did you observe in anhydrous salt?
The anhydrous salt had a slight intense color. In the practice, the hydrated salt had a blue shady color but when it was introduced in the fire. The color changed to a blue light color.
5. Write the industrial applications of hydrated or anhydrous salt.
Calcium chloride, in its anhydrous form, has some very practical uses. As a drying agent, it can be employed to test how dry fresh concrete is. It can likewise measure humidity in air and vapor. Many industrial safe-checks use calcium chloride to measure erosion or cracks in a road. It can also aid in the formation of curds in cheese
The mole ratio is the stoichiometric ratio of reactants and products and is the ratio of the coefficients for reactants and products found in the balanced chemical equation. The average ratio of reactants of mole water to products of moles salt affects in fact the mass which had been calculated during the practice because the grams of salt that was had weighed in the analytic balance were to be equal like the balanced of the equation. Another reason of these is that if it´s not correctly calculated the balanced between the ratio of mole water to moles salt it will get an error and the experiment could fail.
2. Could you use this procedure on an unknown hydrated salt? Explain why or why not.Yes it could be used because an unknown hydrated salt can be balanced in relation with the determination of their properties. It is not necessary to know what kind of salt is. Only is necessary get the mass of hydrated salt to follow the process before mentioned.
3. Could you use the procedure in quemistry lab to determine if an unknown salt was hydrated or anhydrous? Explain why or why not.Yes it could be used because some characteristics of the salt are determinate to know if it´s hydrated or anhydrous.
4. What color change did you observe in anhydrous salt?
The anhydrous salt had a slight intense color. In the practice, the hydrated salt had a blue shady color but when it was introduced in the fire. The color changed to a blue light color.
5. Write the industrial applications of hydrated or anhydrous salt.
Calcium chloride, in its anhydrous form, has some very practical uses. As a drying agent, it can be employed to test how dry fresh concrete is. It can likewise measure humidity in air and vapor. Many industrial safe-checks use calcium chloride to measure erosion or cracks in a road. It can also aid in the formation of curds in cheese
miércoles, 26 de marzo de 2014
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