Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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Carry out the following multiplications and divisions, expressing your answer in scientific notation to the a correct number of significant figures.a. (3.20 × 107) × (1.720 × 105) b. (1.00 × 103) × (5.00 × 103) × (3.0 × 10−3) c. 3.0 3 10251.5 3 102d. 12.2 3 106 2 3 12.3 3 1026 211.2 3 1023 2 3 13.5 3 1023 2
Wire
Wire 1 0.0404 0,610
Wire 2 0.0195 ?
0.0105
(r) (in)
0.0193
Length(in)
0.0114
0.0136
(lbs) (lbs/in³)
?
0.324
4.42E-4 0.698
The volume of a cylindrical piece of wire can be approximated using V = pi r² L
What is the density of Wire 2 in kg/mL?
See the next few questions below to help answer this question!
Metal
Cu-Copper
Unknown
A backyard swimming pool holds a volume of 190 cubic yards (yd3) of water. How many of the following dimensions are equivalent to 190 yd3 ? Assume the density of water is 1.00 g/mL
A.
4.77 x 105 mL
B.
1.45 x 105 kg
C.
1.74 x 102 m3
D.
1.45 x 108 cm3
E.
1.74 x 105 cm3
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- Perform the following calculations and be sure to report your answer using correct number of significant figures and units. a. 1555 in + 14.14 in + 236.00 in = b. 155.15 cm + 0.001 cm + 0.8 cm= c. 158.50 s - 33.1 s = d. 8.2 g + 23 g - 0.005 g =arrow_forward15. 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.arrow_forwardDetermine the number of significant figures in each measurement. a. 508.0 L c. 1.0200 × 1 0 5 kgb. 820,400.0 L d. 807,000 kgarrow_forward
- Given that the volume of a rectangular object is computed is given by the formula V = l × w × h, what is the volume of a block of metal that is 20 inches long, 1.2 feet wide, and 3.4 feet tall? Select one: a. 8.61 ft b. 0.204 cm c. 1.9×103 cm d. 2.1×105 cm3arrow_forwardDecide whether each proposed multiplication or division of measurements is possible. If it is possible, write the result in the last column of the table. proposed multiplication or division 2 15. cm 5.0 cm 2 120. B 0.040 kg 36. kg 4.0 m Is this possible? 00 0 0 yes no yes no yes no result 0.9 D-O X 1²arrow_forwardThe owner of a rock shop claims that a nugget is pure gold. When the nugget is placed into a 100.0-mL graduated cylinder containing 50.0 mL of water and the water rises to 55.4 mL, what should the mass of the nugget be? (densitygold = 19.3 g/cm3) A. 5.40 g B. 20.3 g C. 104 g D. 1.07 x 103 g thank you!arrow_forward
- Gold has a density of 0.01932 kg/cm.What volume (in cm) would be occupied by a 33.3g sample of gold? Select one: O a. 1.72 O b. 5.80 x 104 O c 0.581 O d. 5.80 O e. 0.663arrow_forwardConversions involving units raised to a power: include the correct number of significant digits. a. 5.00 mm^3 to cm^3 b. 75 acres to m^2 c. 4637 nm^3 to in^3arrow_forward5 nyoor X A the p X Spoti x A Chap x E * Par X Netfli X Goo 53. Calculate Make the following conversions. Express your answers in scientific notation. a. 14.8 g = ? ug b. 3.72 g = ? kg C. 66.3 L ? cm³ d. 7.5 x 104 J = ? kJ e. 3.9 × 10° mg = ? dg f. 2.1 X 10 dL = ? µL %3D %3Darrow_forward
- The density of silver is 10.5 g/cm. A piece of silver that occupies a volume of 23.6 cm would have a mass of: اختر احدى الاجابات a. 248 g b. 2.25 g c. 0.445 g d. 112 garrow_forwardHow many grams of alcohol with a 8 density of 0.900 g/cm3 will have the same volume as 20.0 g of mercury, with a density of 13.6 g/cm3 15.1 1.32 1.47 22.2arrow_forwardThe diameter of a hydrogen atom is 212 pm. Find the length in kilometers of a row of 6.02 * 1023 hydrogen atoms. The diameter of a ping pong ball is 4.0 cm. Find the length in kilometers of a row of 6.02 * 1023 ping pong balls.arrow_forward
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