The Nuts and Bolts Lab: A Study of the Classification of ...

Using elements, compounds or both, create a homogeneous mixture and a heterogeneous mixture and explain your reasoning for each. Air that you breathe is a mixture of gases, by volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% Ar or argon, 0.039% CO2 or carbon dioxide, and variable amount of water vapor, on average around 0.4% over ... ................
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