The correct answer is A because particles in solids are packed more compactly than those in liquids, gases, and plasmas, due to the decreased kinetic engergy
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Answer:
Oxygen gas
Explanation:
Potassium chlorate KClO3 decomposes thermally to form potassium chloride KCl and oxygen gas is given off. This is in the presence of a catalyst, manganese iv oxide.
Hence, what is being said in essence is that when potassium chloride is heated in the presence of manganese iv oxide catalyst, oxygen is given off as the gaseous product with the formation of potassium chloride.
The chemical equation for the reaction is :
2KClO3 ——-> 2KCl + 3O2
This procedure is one of most important ways through which oxygen can be produced in the laboratory and can be used as a source of oxygen is industrial processes if on a large scale
Answer:
Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes
Explanation:
If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation.
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