In a reaction, 25 grams of reactant AB breaks down into 10 grams of product A and an unknown amount of product B.Using the law of conservation of mass, how much does product B weigh?
a)25 g
b)10 g
c)15 g
d)It cannot be determined from the given information.
Answers
Answered by
2
Answer:
This means that 25 grams must also be the total mass of both products in this reaction. Hence, if product A is 10 grams, product B will be 25 grams - 10 grams = 15 grams. Therefore, product B must be 15 grams in order to form a total of 25 grams when added to the mass of product A.
Answered by
3
Answer:
15 grams (15g) is the weight of product B.
Explanation:
Law of Conservation of Mass
- The law of conservation of mass states that mass cannot be created or destroyed by chemical reactions or physical changes in an isolated or closed system.
- According to the law of conservation of mass, the mass of the products in a chemical reaction must be equal to the mass of the reactants.
25g AB → 10g A + Xg B
According to the law of conservation of mass,
⇒25 = 10 + X
⇒X = 25 - 10 = 15
∴ Weight of the product B = 15g
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