Which of the following best expresses the law of conservation of mass in a chemical reaction?
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Answer:
both a and b and most probably à
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Answer: A is the answer
Explanation:In a chemical reaction it is not necessary that the mass of each reactant and each product is same. So option B. is wrong.
In a chemical reaction it is not correct that the products and reactants are the same. So option C. is wrong.
In a chemical reaction it is not necessary that the mass of products is always less than mass of reactants as this is against the law of conservation of mass. So option D. is also wrong.
But in a chemical reaction it is necessary that the mass of products is equal to mass of reactants as this is the statement of law of conservation of mass. So option A. is correct...
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