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CHM 101 General Chemistry Objective Question
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Question

If heating 10.0g of CaCO3 produces 4.4g of CO2 and 5.6g of CaO, do these observations agree with the law of conservation of mass?
Options
A No, because 4.4 + 5.6 is less than 10.0
B Yes, because 10.0g of reactant equals 10.0g of products (5.6g + 4.4g)
Correct Answer
C No, because mass is not conserved
D Yes, because the products are different substances
Correct Answer

Option B is the correct answer.

Detailed Explanation

Mass of reactants = 10.0g of CaCO3. Mass of products = 5.6g of CaO + 4.4g of CO2 = 10.0g. Since the mass of reactant equals the mass of products, the observations agree with the law of conservation of mass.

Hint

The notes provide this exact example with solution.

Question Info

Course: CHM 101
Topic: General Chemistry
Type: Objective
Difficulty: Not specified
Question 487 of 1872
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