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?
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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
- How 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 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_forwardour JC • a straight line yes lie as Scientific Notation Convert the following to scientific notation and write the answers in the blanks. oght to bes avloval sell ameldoin dauend how iw boy has muzgam to zatin 19001 siltotu 0.00516 1456 16770000. Convert the following to decimal form and write the answers in the blanks. 5.11 x 104 om enibno0290) ert ni snilno bedainduz 4.22 x 10-¹ varmods 912 M.cz boon upy noftemmalyns not codixed woy tuzno Juorganisinge 8 888.81 9.66 x 107 thom 2 919rid li epilog s szof Hivy toy.ser 7.22 x 10² 998.449 Round the following to one decimal place and write the answers in the blanks. 0.453 Rounding bns gruesom to ainu asmugit trisoitingie zzshrique ort zzanteen aluze no bansyg ad alivuor Round the following to three significant figures and write the answers in the blanks. Cestun der sovelluk 167.76 MOOTMI 0.01111 TROYRARO MO1221M82 999.99 29360 907 zom nalaziddue quearrow_forward
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