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Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation. If the law of constant proportions is true then the weight of zinc required to produce 20 g of the zinc sulphate crystals will be
  • a)
    45.3 g
  • b)
    4.53 g
  • c)
    0.453 g
  • d)
    453 g
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation....
20 g of zinc sulphate
x = (20 * 22.65)/100
x = 4.53g
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Most Upvoted Answer
Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation....
Given:
- Zinc sulphate contains 22.65% zinc.
- Zinc sulphate contains 43.9% water of crystallisation.
- We need to find the weight of zinc required to produce 20 g of the zinc sulphate crystals.

Explanation:
- Let's assume that the weight of zinc sulphate crystals is x g.
- According to the given information, 22.65% of x is the weight of zinc present in the crystals.
- Therefore, the weight of zinc present in x g of zinc sulphate crystals is (22.65/100) * x g.
- Also, 43.9% of x is the weight of water of crystallisation present in the crystals.
- Therefore, the weight of water of crystallisation present in x g of zinc sulphate crystals is (43.9/100) * x g.
- We know that the weight of zinc sulphate crystals is equal to the sum of the weight of zinc and the weight of water of crystallisation present in it.
- So, we can write the equation as:
x = (22.65/100) * x + (43.9/100) * x
- Simplifying the equation, we get:
x = (100/66.55) * x
- Therefore, x = 30.117 g (approx.)
- Now, we need to find the weight of zinc required to produce 20 g of the zinc sulphate crystals.
- We know that 30.117 g of zinc sulphate crystals contain (22.65/100) * 30.117 g = 6.816 g of zinc.
- So, to produce 20 g of zinc sulphate crystals, we need (6.816/30.117) * 20 g = 4.53 g of zinc.

Therefore, the correct answer is option 'B' (4.53 g).
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Community Answer
Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation....
Pls explain me this
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Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation. If the law of constant proportions is true then the weight of zinc required to produce 20 g of the zinc sulphate crystals will bea)45.3 gb)4.53 gc)0.453 gd)453 gCorrect answer is option 'B'. Can you explain this answer?
Question Description
Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation. If the law of constant proportions is true then the weight of zinc required to produce 20 g of the zinc sulphate crystals will bea)45.3 gb)4.53 gc)0.453 gd)453 gCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation. If the law of constant proportions is true then the weight of zinc required to produce 20 g of the zinc sulphate crystals will bea)45.3 gb)4.53 gc)0.453 gd)453 gCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Zinc sulphate contains 22.65% zinc and 43.9% water of crystallisation. If the law of constant proportions is true then the weight of zinc required to produce 20 g of the zinc sulphate crystals will bea)45.3 gb)4.53 gc)0.453 gd)453 gCorrect answer is option 'B'. Can you explain this answer?.
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