Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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15. Complete this table so that all the measurements in each row have the same
value. Use the metric staircase.
How mg
6.6 x 10³
26×107
g
2.8 x 104
cg
28.3
16. What equation is used to determine the density of an object?
mass
Dz Vakume
kg
17. Would the density of a person be the same on the surface of the Earth and o
he surface of the moon? Explain.
Calculate the areas and densities. Report the answers in the correct units.a. the area of a rectangle with sides measuring 3 × 1 0 1 cm and 3 × 1 0 -2 cmb. the area of a rectangle with sides measuring 1 × 1 0 3 cm and 5 × 1 0 -1 cmc. the density of a substance having a mass of 9 × 1 0 5 g and a volume of 3 × 1 0 -1 c m 3d. the density of a substance having a mass of 4 × 1 0 -3 g and a volume of 2 × 1 0 -2 c m 3
Determine the number of significant figures in each measurement. Then, choose the representation of the number where x is in place of the estimated digit from the measurement.
Number of
Measurement
Estimated Digit
Significant Figures
14.8 m
Choose...
3
$10.25
Choose...
4
0.05 L
Choose...
Choose...
1.000 g/mL
1
Choose...
6200 cm
4
Choose...
403 kg
3
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Write the following measured quantities as you would record them using the correct number of significant figures based on the device used to make the measurements. a. Exactly 6mL of water measured with a graduated cylinder that has a smallest scale marking of 0.1mL b. A temperature that appears to be exactly 37 degrees using a thermometer with a smallest scale marking of 1C c. A time of exactly nine seconds measured with a stopwatch that has smallest scale marking of 0.1 second d. Fifteen and one-half degrees measured with a protractor that has 1- degree scale markingsarrow_forwardA solid metal sphere has a volume of 4.2 ft3. The mass of the sphere is 155 lb. Find the density of the metal sphere in grains per cubic centimeter.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_forward
- Consider multiplying “26.2” by “16.43.” What would a mathematician say the answer is? What would a scientist say? Justify the scientist’s answer, not merely citing the rule, hut explaining it.arrow_forward1.18 Two golfers are practicing shots around a putting green. Each golfer takes 20 shots. Golfer 1 has 7 shots within 1 meter of the hole, and the other 13 shots are scattered around the green. Golfer 2 has 17 shots that go into a small sand trap near the green and 3 just on the green near the trap. Which golfer is more precise? Which is more accurate?arrow_forwardThe longest river in the world is the Nile River with a length of 4145 mi. How long is the Nile in cable lengths, meters, and nautical miles? Use these exact conversions to help solve the problem: 6 ft = 1 fathom 100 fathoms = 1 cable length 10 cable lengths = 1 nautical mile 3 nautical miles = 1 leaguearrow_forward
- The density of quartz mineral was determined by adding a weighed piece to a graduated cylinder containing 52.2 mL water. After the quartz was submerged, the water level was 67.1 mL. The quartz piece weighed 39.8 g. What was the density of the quartz?arrow_forward1.47 A student weighs 10 quarters and finds that their total mass is 56.63 grams. What should she report as the average mass of quarter based on her data?arrow_forwardThe beakers shown below have different precisions. a. Label the amount of water in each of the three beakers to the correct number of significant figures. b. Is it possible for each of the three beakers to contain the exact same amount of water? If no, why not? If yes, did you report the volumes as the same in part a? Explain. c. Suppose you pour the water from these three beakers into one container. What should be the volume in the container reported to the correct number of significant figures?arrow_forward
- A perfect cube of unknown elemental composition has a length of 1.40 m on each side. The mass of the cube is 21.57 Mg (megagrams). Using this information and Table 2.8, determine the metal used to prepare the cube.arrow_forwardAn unknown sample of a metal is 1.0 cm thick, 2.0 cm wide, and 10.0 cm long. Its mass is 54.0 g. Use data in Table 1.1 to identify the metal. (Remember that 1 cm3 = 1 mL.)arrow_forwardA student determines the density of a metal by taking two cylinders of equal mass and volume. Cylinder A is filled with mercury and the metal. The mercury and metal together have a mass of 92.60 g. Cylinder B is filled only with mercury. The mass of the mercury in cylinder B is 52.6 g more than the mass of mercury and metal in cylinder A. What is the density of the metal? The density of mercury is 13.6 g/cm3.arrow_forward
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Measurement and Significant Figures; Author: Professor Dave Explains;https://www.youtube.com/watch?v=Gn97hpEkTiM;License: Standard YouTube License, CC-BY
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