Using techniques similar to the aluminum foil lab, how could you do an experiment to determine the volume of the filled soda bottle? What factors might limit the accuracy of your experiment?
Answers
Explanation:
pplications of density measurements. The densities of brass and aluminum will be calculated from mass and volume measurements. To illustrate the effects of precision on data, volumes will be determined by three different methods: geometrically (measuring lengths); water displacement; and pycnometry. The composition of a mixed brass-aluminum cylinder and the volume of empty space within a hollow cylinder will also be found.
Objectives and Science Skills
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Use three methods to determine the volumes of solid aluminum and solid brass cylinders and assess the relative merits and limitations of each method.
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Use mass-based pycnometry measurements to find the volume of a void in a hollow cylinder and the mass fractions of aluminum and brass in a plugged (mixed) metal cylinder.
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Calculate results-based (values and uncertainties) experimental data, known mathematical relationships (e.g., between mass, volume, and density), and statistical methods (e.g., error analysis and propagation).
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Evaluate the experimental methods and their outcomes in terms of parameters such as reliability, difficulty, accuracy, and precision.
Using the rearranging equation V = m/D, the volume of the aluminum can then be computed.
Density measurements have several applications. Mass and volume measurements will be used to compute the density of brass and aluminum. Volumes will be determined using three distinct ways to demonstrate the impact of precision on data: geometrically (measured lengths), water displacement, and pycnometer. The amount of empty space inside a hollow cylinder and the composition of a combined brass-aluminum cylinder will also be discovered.