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Chapter 1: Problem 10
Write the name of the element represented by the following symbols. (a) \(\mathrm{Cr}\) (b) \(\mathrm{Ca}\) (c) Fe (d) \(\mathrm{Zn}\)
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In the old pharmaceutical system of measurements, masses were expressed in grains. There are \(5.760 \times 10^{3}\) grains in \(1 \mathrm{lb}\). An old bottle of aspirin lists 5 grains of active ingredient per tablet. How many milligrams of active ingredient are there in the same tablet?
The Kohinoor Diamond \(\left(d=3.51 \mathrm{~g} / \mathrm{cm}^{3}\right)\) is 108 carats. If one carat has a mass of \(2.00 \times 10^{2} \mathrm{mg}\), what is the mass of the Kohinoor Diamond in pounds? What is the volume of the diamond in cubic inches?
Write the appropriate symbol in the blank \((>,<\), or \(=)\). (a) \(37.12 \mathrm{~g}\)_______\(-0.3712 \mathrm{~kg}\) (b) \(28 \mathrm{~m}^{3}\)_______\(28 \times 10^{2} \mathrm{~cm}^{3}\) (c) \(525 \mathrm{~mm}\)_______\(525 \times 10^{6} \mathrm{~nm}\)
A waterbed filled with water has the dimensions \(8.0 \mathrm{ft} \times 7.0 \mathrm{ft} \times\) \(0.75 \mathrm{ft}\). Taking the density of water to be \(1.00 \mathrm{~g} / \mathrm{cm}^{3}\), how many kilograms of water are required to fill the waterbed?
The following data refer to the element phosphorus. Classify each as a physical or a chemical property. (a) It exists in several forms, for example, white, black, and red phosphorus. (b) It is a solid at \(25^{\circ} \mathrm{C}\) and \(1 \mathrm{~atm}\). (c) It is insoluble in water. (d) It burns in chlorine to form phosphorus trichloride.
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