Answer:
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Answer: A new model of the atom that described electrons as being in a cloud
Explanation:
It actually depends on the percentage of the concentration give. Percentages can be expressed as %mass/mass, %volume/volume or %mass/volume. To keep things simple, let's just assume that it is in %volume/volume. Thus, 13% of 520 mL is pure acid.
Volume of pure acid = 520*0.13 = 67.6 mL
The answer to your question would be silicon. I hope this helped!!!