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Procedure:
What is the mass of all the Fs that you have?
Make as much FsR as your supply of atoms allows by putting one ring on each fastener.
What is the mass of the product you have synthesized?
If you have an excess of Fs, find its mass.
How much F's reacted with R?
What is the ratio of the mass of R to the mass of product in your sample of the compound?
Compare your results with your classmates.
Does the model as illustrated by fasteners and rings agree with the law of constant proportion?
Would the ratio have been the same if you had used heavier rings?
Suppose you "decomposed" your "compound" into pure Fs and R by taking the rings off the fasteners. You would get back all the "atoms" you started with.
If you then measured the masses of the "elements" Fs and R, would the model agree with the law of conservation of mass?
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