Question

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!

Answer 1

`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.