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Chapter 18: Q. 9 (page 511)
1.0 mol of gold is shaped into a sphere. What is the sphere’s
diameter?
The solution deals with the transformation of gold into a sphere.
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A 60.00 L fuel tank is filled with gasoline on a –day, then rolled into a storage shed where the temperature is . If the tank is not vented, what minimum volume needs to be left empty at filling time so that the tank doesn’t rupture as it warms?
To determine the mass of neon contained in a rigid, cylinder, you vary the cylinder’s temperature while recording the reading of a pressure gauge. Your data are as follows:
| Temperature (°C) | Pressure gauge (atm) |
| 100 | 6.52 |
| 150 | 7.80 |
| 200 | 8.83 |
| 250 | 9.59 |
Use the best-fit line of an appropriate graph to determine the mass of the neon.
What is the number density of (a) aluminium and (b) lead?
The semiconductor industry manufactures integrated circuits in large vacuum chambers where the pressure is 1.0 * 10-10 mm of Hg.
a. What fraction is this of atmospheric pressure?
b. At T = 20C, how many molecules are in a cylindrical chamber 40 cm in diameter and 30 cm tall?
The solar corona is a very hot atmosphere surrounding the visible surface of the sun. X-ray emissions from the corona show that its temperature is about . The gas pressure in the corona is about . Estimate the number density of particles in the solar corona.
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