Answer:
Brass is a homogenous mixture of copper and zinc
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Answer:
Air is mostly gas
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.
Explanation:
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it ionizes completely because it's a strong acid so no HCl particles will be found only H+ that reacts with H2O and Cl- so the 3rd option is correct
