Chapter 1: Problem 24
Convert these to nonscientific notation. (a) \(3.256 \times\) \(10^{-5},(b) 6.03 \times 10^{6}\)
Chapter 1: Problem 24
Convert these to nonscientific notation. (a) \(3.256 \times\) \(10^{-5},(b) 6.03 \times 10^{6}\)
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Which of these describe physical and which describe chemical properties? (a) Iron has a tendency to rust. (b) Rainwater in industrialized regions tends to be acidic. (c) Hemoglobin molecules have a red color. (d) When a glass of water is left out in the sun, the water gradually disappears. (e) Carbon dioxide in air is converted to more complex molecules by plants during photosynthesis.
How many minutes does it take light from the sun to reach Earth? (The distance from the sun to Earth is 93 million mi; the speed of light \(=3.00 \times\) \(\left.10^{8} \mathrm{~m} / \mathrm{s} .\right)\)
In 2004 about 87.0 billion pounds of sulfuric acid were produced in the United States. Convert this quantity to tons.
Pheromones are compounds secreted by females of many insect species to attract mates. Typically, \(1.0 \times 10^{-8} \mathrm{~g}\) of a pheromone is sufficient to reach all targeted males within a radius of 0.50 mi. Calculate the density of the pheromone (in grams per liter) in a cylindrical air space having a radius of \(0.50 \mathrm{mi}\) and a height of \(40 \mathrm{ft}\).
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