Chemistry, 15.12.2020 14:00 jennyrr9021
1. Air contains mostly nitrogen (78%) and oxygen (21%). It also contains other gases, including carbon dioxide and helium, and various pollutants (both gases and solids). Write a brief explanation about why air is a mixture, whether it is homogeneous or heterogeneous, and how it can be separated into its components.
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1. Air contains mostly nitrogen (78%) and oxygen (21%). It also contains other gases, including carb...
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