Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
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Chapter 1, Problem 44E
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?
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7. A concentrated sulfuric acid solution is 65.0% H₂SO4 by mass and has a density of 1.55 g/mL
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To determine the density of a solution, the mass and volume of two samples are measured. The results are recorded in the table.
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Mass (g)
9.90
9.84
Volume (mL)
10.0
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In each sample, which measurement limits the number of significant digits in the calculated density?
a. both measurements are limiting
b. The mass measurement is limiting
c. The volume measurement is limiting
Sample 1____
Sample 2 ____
c.
A small hole in the wing of a space shuttle requires a 16.1 cm²
patch.
Note: Reference the SI prefixes table and Conversion factors for non-SI units table for additional information.
Part 1 of 2
What is the patch's area in square kilometers (km²)? Round your answer to 3 significant figures.
2
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x10
Part 2 of 2
✗
$3.01
If the patching material costs NASA
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Chapter 1 Solutions
Chemistry
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