A carbon dioxide molecule is
a. linear and polar.
b. angular and polar.
c. linear and nonpolar.
d. angular and nonpolar.
c
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Homogeneous mixtures are also called ______________
Fill in the blank(s) with correct word
A metal block has a density of 5000 kg per cubic meter and a mass of 15,000 kg. What is its volume?
A) 0.33 cubic meters B) 3 cubic meters C) 5 cubic meters D) 15 cubic meters E) none of the above
Car A is traveling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind car B when the driver of car A accelerates his car with a uniform forward acceleration of 2.40 m/
How long after car A begins to accelerate does it take car A to overtake car B? A) 5.50 s B) 12.6 s C) 19.0 s D) 316 s E) Car A never overtakes car B.
If the communication lifetime of civilizations in our galaxy is 10,000 years and our galaxy is 13 billion years old, what is the chance of us detecting another intelligent civilization now?
A) 1 in 13,000 B) 1 in 1,300,000 C) 1 in 1300 D) 1 in 130,000