Question

12
k + mgbr₂ → kbr + mg
10g 2g 6g?
according to the law of conservation of mass, how much mg will be produced? (only put the numerical value)
answer
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Explanation:

Step1: Apply the law of conservation of mass

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. So, the total mass of reactants equals the total mass of products.
The mass of reactants is \(10g + 2g=12g\).
The mass of one of the products (\(KBr\)) is \(6g\). Let the mass of \(Mg\) be \(x\).
We have the equation \(10 + 2=6 + x\).

Step2: Solve for \(x\)

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Answer:

\(6\)