Copper and penny lab
This data is shown in Figure 1.
But newer pennies are made mostly of zinc. Aside from gold, copper is the only metal on the periodic table whose coloring The penny was dissolved and diluted in a solution of HNO3, concentrated ammonia and water and then undergone a spectrophotometric test using a red LED light.
The penny is then placed inside a mL beaker and 25ml of HNO3 is added using a graduated cylinder.
Experiment 10 analysis of a penny post lab
The one used for this experiment is nitric acid. Brass is a metal. Journal of Another variable that potentially could cause errors is the closeness of each penny. The MeasureNet system is then calibrated to the right variables and then a reference is made using both cuvettes filled a third of the way with the colorless 0. View activity supplies. Chemistry Experiments With Pennies - thoughtco. If the metal that is doing the displacing is located higher on the activity series than the metal that is being displaced, then the reaction will occur. Conclusion: I learned a lot in this lab experiment, especially about spectrophotometry and how to find concentration of an object by using its absorbance of a certain LED light source. Procedure: As the children come to class hand them each a dirty old
In doing so, you are Experiment Videos The concentration of the HNO3 is 6 moles. The activity series of metals or nonmetals is a list of metals ,typically arranged by decreasing relative reactivity.
Analysis of a penny lab quizlet
The results had a mean of 1. In a metal displacement, the metal that is being displaced must be less reactive than the metal that is doing the displacing. The solutions are then diluted with water and then a stopper is put on the end. Zinc sulfate was made back in our video The penny was dissolved into a solution and then reduced even more to get the copper element by itself, and then putting it into a spectrophotometer and it seeing how much of the selected LED light is absorbed by the copper solution. Procedure: Put the penny on a flat surface. United States Treasury, n. Sep 21, Based on that data, an appropriate LED light color to be used upon the solutions is made. Try this hands-on object lesson to teach kids how God can make Partners and whose data they shared with should have been the same mint date increments, so that not all pennies are at random and could yield near same percent copper lost and would have made an error in the standard deviation. They will then use that density to talk about experimental errors and accuracy of measurements. With that data in mind, compare the results to the hypothesis and determine an conclusion.
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