Hydrocarbons are first divided into aromatic and ______________ hydrocarbons
Fill in the blank(s) with correct word
aliphatic
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If a fossil bone is found to contain 1/16th as much Carbon-14 as the bone of a living animal, what is the approximate age of the fossil? (half-life of 14C = 5730 years)
a. 7640 years c. 45,800 years b. 22,900 years d. 17,200 years
A pair of conductors are connected with a wire. Which of the following statements is necessarily true?
A. The conductors are at the same electric potential B. The electric field at the surface of each conductor is the same C. The conductors each have the same charge D. There is no net charge on the conductors and wire
Why do scientists say that evolution is a "theory"?
A) because it explains a great deal about life and is supported by an enormous body of evidence B) because they are not very confident that it really happened C) because it's really just a guess about how life developed on Earth D) because it is supported by only a small amount of evidence
How much energy is radiated each second by one square meter of a star whose temperature is 10,000 K? Note: ? in the Stefan-Boltzmann law is equal to 
.
a.
5.67 × 1012 J
b.
5.67 × 108 J
c.
5.67 × 104 J
d.
300 nm
e.
300,000,000 nm