About how big is an atom?
A) too small to measure
B) about a millionth of a meter across
C) about a billionth of a meter across
D) about a trillionth of a meter across
E) none of the above
Correct Answer:
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Q52: The pressure exerted by a gas is
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Q54: DNA is a complex
A)atom.
B)molecule.
C)life form.
D)mystery.
E)acronym.
Q55: The difference between the pressures inside and
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Q59: The positively charged particle inside an atom
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Q62: An atomizer works because of
A)Archimedes' principle.
B)Pascal's principle.
C)Bernoulli's
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