Draw the two structural formulas for the molecular formula C2H7N
CH3CH2NH2 and CH3NHCH3
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A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the opposite direction has a speed of
A) 0 m/s. B) 3 m/s. C) 4 m/s. D) 6 m/s.
If the Hubble constant is 25 km/s per million light-years, use it to estimate the age of the universe? (c = 3.00 × 108 m/s, 1 ly = 9.461 × 1015 m, 1 y = 3.156 × 107 s)
A) 15 Gy B) 10 Gy C) 20 Gy D) 12 Gy E) 25 Gy
The brakes of a speeding truck are slammed on and it skids to a stop. If the truck were heavily loaded so that it had twice the total mass, the skidding distance would be
A) half as far. B) 1.5 times as far. C) twice as far. D) 4 times as far. E) the same.
If a foreign atom is more than _____________% larger than its host, it normally does not form a continuous substitutional solid solution.
Fill in the blank(s) with the appropriate word(s).