g/cm')? 2. Three students use a meterstick to measure a length of wire. One student records a measurement of 3 cm. The second records 3.3 cm. The third records 2.87 cm. Explain which answer was recorded correctly. 3. Express each quantity in the unit listed to its right. a. 3.01 g

g/cm')? 2. Three students use a meterstick to measure a length of wire. One student records a measurement of 3 cm. The second records 3.3 cm. The third records 2.87 cm. Explain which answer was recorded correctly. 3. Express each quantity in the unit listed to its right. a. 3.01 g

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 48E: Although the preferred SI unit of area is the square meter, land is often measured in the metric...

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Question

13.6 g/cm)?
22. Three students use a meterstick to measure a length of
wire. One student records a measurement of 3 cm.
The second records 3.3 cm. The third records 2.87 cm.
Explain which answer was recorded correctly.
3. Express each quantity in the unit listed to its right.
d. 0.2 L
a. 3.01 g
b. 6200 m
c. 6.24 x 10-7g Hg
eg
dm
km
e. 0.13 cal/g
kcal/g
L
f. 3.21 ml

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Although the preferred SI unit of area is the square meter, land is often measured in the metric system in hectares (ha). One hectare is equal to 10,000 m2. In the English system, land is often measured in acres (1 acre = 160 rod2). Use the exact conversions and those given in Exercise 47 to calculate the following. a. 1 ha = __________ km2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers c. A lot with dimensions 120 ft by 75 ft is to be sold for 6500. What is the price per acre? What is the price per hectare?
When 12.6 g calcium carbonate (the principal component of chalk) is treated with 63.0 mL hydrochloric acid (muriatic acid sold in hardware stores; density = 1.096 g/mL), the calcium carbonate reacts with the acid, goes into solution, and carbon dioxide gas bubbles out of the solution. After all of the carbon dioxide has escaped, the solution weighs 76.1 g. Calculate the volume (in liters) of carbon dioxide gas that was produced. (The density of the carbon dioxide gas is 1.798 g/L.)
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.
How many grams are there in 3.58 short tons? Note that 1 g = 0.03527 oz (ounces avoirdupois), 1 lb (pound) = 16 oz, and 1 short ton = 2000 lb. (These relations are exact.)
Providing no reaction occurs, a solid will float on any liquid that is more dense than it is. The volume of a piece of calcite weighing 35.6 g is 12.9 cm3. On which of the following liquids will the calcite float: carbon tetrachloride (density = 1.60 g/cm3), methylene bromide (density = 2.50 g/cm3), tetrabromoethane (density = 2.96 g/cm3), or methylene iodide (density = 3.33 g/cm3)?
This year, like many past years, you begin to feel very sleepy alter eating a large helping of Thanksgiving turkey. Some people attribute this sleepiness to the presence of the amino acid tryptophan in turkey. Tryptophan can be used by the body to produce serotonin, which can calm the brains activity and help to bring on sleep. a. What mass in grams of tryptophan is in a 0.25-lb serving of turkey? (Assume tryptophan accounts for 1.0% of the turkey mass.) b. What mass in grams of tryptophan is in 0.25 quart of milk? (Assume tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L.)
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What is the mass of a 43.8-mL sample of gasoline, which has a density of 0.70 g/cm3?
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The first measurement of sea depth was made in 1840 in the central South Atlantic, where a plummet was lowered 2425 fathoms. What is this depth in meters? Note that 1 fathom = 6ft, 1 ft = 12 in., and 1 in. = 2.54 102 m. (These relations are exact.)
1.65 An industrial engineer is designing a process to manufacture bullets. The mass of each bullet must be within 0.2 5% of 150 grains. What range of bullet masses, in mg, will meet this tolerance? 1 grain = 64.79891 mg.
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