Monicaamm12983
27.02.2020 •
Biology
Question 4 (Multiple Choice Worth 1 points)
(04.02 MC)
Which statement is correct about the mass of carbon dioxide used during photosynthesis?
It is equal to the total mass of oxygen used.
It is less than the total amount of glucose and water used.
It is equal to the total mass of glucose and oxygen formed.
It is less than the total mass of glucose and oxygen formed.
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Ответ:
It is less than the total mass of glucose and oxygen formed.
Explanation: During photosynthesis, six molecules of carbon dioxide combines with six molecules of water in the presence of sunlight to produce one molecule of glucose and six molecules of oxygen. The equation for the reaction is 6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2.
In an ordinary chemical reaction, the total mass of the reactants must be equal to the total mass of the products because according to the law of conservation of mass, matter can neither be created nor be destroyed in an ordinary chemical reaction. The implies that the total mass of carbon dioxide and water used in photosynthesis must be equal to the total mass of glucose and oxygen formed. Therefore, the mass of carbon dioxide used in photosynthesis is less than the total mass of glucose and oxygen formed.
Ответ:
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