AP* Chemistry: The Central Science (NASTA Edition)
14th Edition
ISBN: 9780134650951
Author: Brown and Lemay
Publisher: PEARSON
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- A sample of a bright blue mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 7.35 g; in water, it weighed 5.40 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?arrow_forwardWhat is the difference in surface area between two circles, one of radius 7.98 cm, the other of radius 8.50 cm? The surface area of a circle of radius r is r2. Obtain the result to the correct number of significant figures.arrow_forwardGold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 105 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.arrow_forward
- 1.89 Imagine that you place a cork measuring 1.30cm4.50cm3.00cm in a pan of water. On top of this cork, you place a small cube of lead measuring 1.15 cm on a side. Describe how you would determine if the combination of the cork and lead cube will still float in the water. Note any information you would need to look up to answer the question.arrow_forwardFor the masses and volumes indicated, calculate the density in grains per cubic centimeter. mass = 452.1 g: volume = 292 cm3 mass = 0.14 lb: Volume 125 mL mass = 1.01 kg; volume = 1000 cm3 mass = 225 mg: volume = 2.51 mLarrow_forwardOne of the smallest brilliant-cut diamonds ever crafted had a diameter of about 1/50 in. 0.02 in.. How many millimeters is this?arrow_forward
- A sample of vermilion-colored mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 18.49 g; in water, it weighed 16.21 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?arrow_forwardThe radius of an atom is on the order of1010 m. What is this radius in centimeters? In inches? In nanometers?arrow_forwardWhat is the difference between reporting the quantity nine inches as 9 inches and 9.00 inches?arrow_forward
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