It is a. oxidation-reduction
Answer: The balanced equation is
Explanation:
The given reaction equation is as follows.
Here, number of atoms present on reactant side are as follows.
Number of atoms on product side are as follows.
To balance this equation, multiply by 2 and MgO by 3 on reactant side. Also, multiply by 3 on product side. Therefore, the equation can be rewritten as follows.
Hence, number of atoms on reactant side are as follows.
Number of atoms on product side are as follows.
Since, this equation contains same number of atoms on both reactant and product side. Therefore, this equation is now balanced equation.
Thus, we can conclude that the balanced equation is .
Answer: monki says d
Explanation: monki big brain oof
Explanation:
What happens during gas exchange in the alveoli?
These are called alveoli. They inflate when a person inhales and deflate when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
What is the role of alveoli in gas exchange?
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.