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Chapter 1: Problem 73
At what point is the temperature in \({ }^{\circ} \mathrm{F}\) exactly twice that in \({ }^{\circ} \mathrm{C} ?\)
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Write the name of the element represented by the following symbols. (a) \(\mathrm{Hg}\) (b) Si (c) Na (d) I
How do you distinguish (a) density from solubility? (b) an element from a compound? (c) a solution from a heterogeneous mixture?
Classify each of the following as element, compound, or mixture. (a) gold (b) milk (c) sugar (d) vinaigrette dressing with herbs
A pycnometer is a device used to measure density. It weighs \(20.455 \mathrm{~g}\) empty and \(31.486 \mathrm{~g}\) when filled with water \(\left(d=1.00 \mathrm{~g} / \mathrm{cm}^{3}\right) .\) Pieces of an alloy are put into the empty, dry pycnometer. The mass of the alloy and pycnometer is \(28.695 \mathrm{~g}\). Water is added to the alloy to exactly fill the pycnometer. The mass of the pycnometer, water, and alloy is \(38.689 \mathrm{~g}\). What is the density of the alloy?
The height of a horse is usually measured in hands. One hand is exactly \(1 / 3 \mathrm{ft}\) (a) How tall (in feet) is a horse of \(19.2\) hands? (b) How tall (in meters) is a horse of \(17.8\) hands? (c) A horse of \(20.5\) hands is to be transported in a trailer. The roof of the trailer needs to provide \(3.0 \mathrm{ft}\) of vertical clearance. What is the minimum height of the trailer in feet?
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