1.47 A cylindrical tube 9.5 cm high and 0.85 cm in diameter is used to collect blood samples. How many cubic decimeters (dm³) of blood can it hold (V of a cylinder = ar h)?

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 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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These two questions please. 47 and 49
10 cells in liters (L)?
87 (a) How many cubic meters of milk are in 1 qt (946.4 mL)?
)How many liters of milk are in 835 gal (1 gal = 4 qt)?
W
1.38 An empty vial weighs 55.32 g. (a) If the vial weighs
185.56 g when filled with liquid mercury (d = 13.53 g/cm³).
(a) Which of the liquids is (are) more dense than water and less
dense than water?
2.
(a)
(b) If the densities of W, C, and A are 1.0 g/mL, 0.88 g/mL, and
1.4 g/mL, respectively, which of the following densities is possi-
ble for liquid B: 0.79 g/mL, 0.86 g/mL, 0.94 g/mL, or 1.2 g/mL?
1.47 A cylindrical tube 9.5 cm high and 0.85 cm in diameter is
used to collect blood samples. How many cubic decimeters (dm')
of blood can it hold (V of a cylinder = arh)?
(c) V
1.60
(a)
1.6
(a)
%3D
1.48 Copper can be drawn into thin wires. How many meters of
34-gauge wire (diameter = 6.304x10-3 in) can be produced from
the copper in 5.01 lb of covellite, an ore of copper that is 66%
copper by mass? (Hint: Treat the wire as a cylinder: V of cylinder =
Trh; d of copper
1.6
mi
(a
1.
8.95 g/cm.)
m
Uncertainty in Measurement: Significant Figures
(Sample Problems 1.9 and 1.10)
(a
Concept Review Questions
1.49 What is an exact number? How are exact numbers treated
differently from other numbers in a calculation?
1.50 Which procedure(s) decrease(s) the random error of a mea-
surement: (1) taking the average of more measurements; (2) cali-
brating the instrument; (3) taking fewer measurements? Exp
1.51 A newspaper reported that the attendance at Slippery Rock's
home football game was 16,532. (a) How many significant figures
does this number contain? (b) Was the actual number of people
counted? (c) After Slippery Rock's next home game, the news-
paper reported an attendance of 15,000. If you assume that this
number contains two significant figures, how many people could
actually have been at the game?
Skill-Building Exercises (grouped in similar pairs)
Transcribed Image Text:10 cells in liters (L)? 87 (a) How many cubic meters of milk are in 1 qt (946.4 mL)? )How many liters of milk are in 835 gal (1 gal = 4 qt)? W 1.38 An empty vial weighs 55.32 g. (a) If the vial weighs 185.56 g when filled with liquid mercury (d = 13.53 g/cm³). (a) Which of the liquids is (are) more dense than water and less dense than water? 2. (a) (b) If the densities of W, C, and A are 1.0 g/mL, 0.88 g/mL, and 1.4 g/mL, respectively, which of the following densities is possi- ble for liquid B: 0.79 g/mL, 0.86 g/mL, 0.94 g/mL, or 1.2 g/mL? 1.47 A cylindrical tube 9.5 cm high and 0.85 cm in diameter is used to collect blood samples. How many cubic decimeters (dm') of blood can it hold (V of a cylinder = arh)? (c) V 1.60 (a) 1.6 (a) %3D 1.48 Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304x10-3 in) can be produced from the copper in 5.01 lb of covellite, an ore of copper that is 66% copper by mass? (Hint: Treat the wire as a cylinder: V of cylinder = Trh; d of copper 1.6 mi (a 1. 8.95 g/cm.) m Uncertainty in Measurement: Significant Figures (Sample Problems 1.9 and 1.10) (a Concept Review Questions 1.49 What is an exact number? How are exact numbers treated differently from other numbers in a calculation? 1.50 Which procedure(s) decrease(s) the random error of a mea- surement: (1) taking the average of more measurements; (2) cali- brating the instrument; (3) taking fewer measurements? Exp 1.51 A newspaper reported that the attendance at Slippery Rock's home football game was 16,532. (a) How many significant figures does this number contain? (b) Was the actual number of people counted? (c) After Slippery Rock's next home game, the news- paper reported an attendance of 15,000. If you assume that this number contains two significant figures, how many people could actually have been at the game? Skill-Building Exercises (grouped in similar pairs)
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