Which of the following does NOT show the law of conservation of mass?
A. 24 g of Mg burn in 32 g O2 to produce 56 g of MgO.
B. 24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO.
C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO.
D. 1 atom of Mg reacts with 1 atom of O to produce a unit of MgO that contains 2 atoms.
I think it's B.
1. b
2. d
3. a
4. b
5. a
6. b
7. d
8. b
9. b
10. a
11. d
12. b
13. d
14. c
15. b
OMG KAT IS CORRECT 15/15!!!
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its b it say what does Not show
Kat is 100% correct. Just tried it out myself.
To determine which of the options shows the law of conservation of mass, we need to understand what the law states. The law of conservation of mass states that in a chemical reaction, the total mass of the reactants will always be equal to the total mass of the products.
Let's analyze each option:
A. 24 g of Mg burn in 32 g O2 to produce 56 g of MgO.
In this option, the total mass of the reactants (24 g + 32 g = 56 g) is equal to the total mass of the products (56 g). So, option A demonstrates the conservation of mass.
B. 24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO.
In this option, the volumes of the reactants and the products are given, not the masses. Since the law of conservation of mass refers to mass, not volume, option B does not demonstrate the conservation of mass.
C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO.
This option provides information about the number of atoms and molecules involved, but not the masses. To determine if conservation of mass occurs, we need information about the masses of the reactants and products. So, option C does not demonstrate the conservation of mass.
D. 1 atom of Mg reacts with 1 atom of O to produce a unit of MgO that contains 2 atoms.
Again, this option provides information about the number of atoms, but not the masses. So, option D also does not demonstrate the conservation of mass.
You are correct. The answer is B, as it does not show the law of conservation of mass.