Chris is correct because the reactants and products do not have to have the same mass, but they do have to weigh the same. Is the correct answer:) Hannah is right because the mass of the reactants was different than the mass of the products. is incorrect
The answer is carbon dioxide
Solid , solid, partially melted, liquid so the answer is D
<u>Answer:</u>
<em>The final volume must be 400 mL.</em>
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<u>Explanation:</u>
Let us assume the Initial volume as 100ml
Using dilution factor formula

So,

Thus, the final volume must be 400 mL.