Does it make sense to say that a textbook is about 99.9% empty space?
A. No. A textbook could only be considered to be 99.9% empty space if it were combusted.
B. Yes. A textbook like all material things is made up of atoms, which are considered to be 99.9% empty space.
C. No. A textbook is a solid and thus is quite dense. Therefore, it is not 99.9% empty space.
D. No. Only gases are considered to be 99.9% empty space. Liquids and solids are not.
Answer: B
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