Before Class Thursday Sept. 29

Before class on Thursday Sept. 29:

 

 

 

14 thoughts on “Before Class Thursday Sept. 29

  1. when we are expressing the concentration of an electrolyte, why is the overall aqueous solution .025 mol, but then when each part is calculated, it adds up to more than the whole solution?

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  2. In these videos I learned about concentration and molarity. Concentration is defined as how much solute is dissolved in a certain amount of solvent. Molarity is a measurement of concentration and has to do with the ratio of moles of the solute to the volume of the solution and is represented by the symbol M. I learned how to prepare solutions and calculate molarity. I also learned about how to express the molarity of each ion in an electrolyte given the molarity of the whole electrolyte.

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  3. In these videos, I was showed how to prepare a solution and the dilution of a solution. I also learned how to apply molarity to solve different types of problems.

    Does the solution always have to be H2O (distilled water)? If the solution is something else other than H2O, will it cause a difference due to the ions?

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  4. In this lesson, I learn about concentration (amount of solute dissolved in a certain amount of solvent) and dilution (the process of reducing concentration of a solute in solution). I learned to use the Molarity formula (Mol/V) for finding the mass of solute to prepare a solution with a certain concentration or finding out how many mole I need to make a diluted solution.

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  5. From this video I learned how to calculate the Molarity of a solution. You find the molarity by dividing the number if moles by the volume in liters. I also learned the steps used to prepare a solution and Concentration. Concentration is the amount of solute dissolved in solvent. The more solute there is in a certain amount of solvent, the more concentrate it will be.

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  6. These videos taught me what concentration of solution is and how to prepare a solution. I also learned how to express the concentration of an electrolyte.

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  7. Concentration is defined as the amount of solute dissolved in a certain amount of solvent. If there’s more solute, then it’ll be more concentrated. Also we converted volume to mass.
    Question: none

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  8. I learned about concentration and molarity and how they relate to each other. I also learned how to prepare a solution and practiced some sample problems on how to calculate molarity.

    I have the same question as Amber; why is the molar concentration for Ca+ 0.025 when the whole solution has a molarity of 0.025?

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  9. Concentration is the relationship between the amount of solute dissolved in a certain amount of solvent. The more solute the more concentrated a solution is.

    Question: can you technically use the BCA table to find the molarity of the individual ions?

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  10. These videos taught me about concentration and molarity. Concentration is how much solute is dissolved in a certain amount of solvent. Molarity is a measurement of concentration and is represented by the symbol M. Basically, Molarity = moles/Volume(Liters)

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