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Which of the following correctly illustrates the conservation of mass for the reaction below? I choose B but I’m not sure if I’m correct!

Which of the following correctly illustrates the conservation of mass for the reaction-example-1

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4Na_((s))+O_(2(g))\rightarrow2Na_2O_((s))

Answer: A


Na(23*4=92g);O2(16*2=32g);Na2O(23+23+16)*2=124

Explanation: Based on the Law of conservation of mass the total mass of the reactants will equal to the total mass of the products. This happens as matter is not destroyed.

User Colin Johnston
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