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Need help and explanation with Question 6 and Question 8 posted in photo.

Need help and explanation with Question 6 and Question 8 posted in photo.

Chemistry
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 48E: Although the preferred SI unit of area is the square meter, land is often measured in the metric...
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Need help and explanation with Question 6 and Question 8 posted in photo.
_6) An irregularly-shaped piece of metal with a density of 7.90 g/mL is dropped into a graduated cylinder containing water. Given the following information, what is the mass of the metal? moUxd Volume of water in cylinder = 60.2 mL Volume of water + metal in cylinder: 63.3 mL A) 2.54 g B) 475.0 g C) 5.81 g D) .832 g E) 24.5 g I 7) A student measured the diameter of a sphere and determined the average value. His measurements are 5.17 cm, 5.16 cm, and 5.17 cm If the true diameter is 6.18 cm, what can be said about the student's results? A) It is accurate and precise. B) It is accurate but not precise. O It is precise but not accurate. D) It is neither precise nor accurate. 8). Convert 100 cm3 to m3. A) 1 x 10-4 m3 B) 1 x 100 m3 C) 1 × 104 m3 D) 1 × 108 m3 9) The observation that hydrogen and oxygen can react to form two compounds with different chemical and physical properties, one having an O:H mass ratio = 8:1 and the other having an O:H mass ratio = 16:1 is consistent with the law of A) definite proportions. B) energy conservation. C) mass conservation. D) multiple proportions. 10) The existence of electrons in atoms of all elements was demonstrated by A) Millikan's oil drop experiment. B) Rutherford's gold foil experiment. CThomson's cathode ray tube experiment. D) None of the above. 11) Which of the following two atoms are isotopes? 40 A) 18 Ar and Ca B c and 1c C) Cl and 30 Br D) Mg and 12c ion
Transcribed Image Text:_6) An irregularly-shaped piece of metal with a density of 7.90 g/mL is dropped into a graduated cylinder containing water. Given the following information, what is the mass of the metal? moUxd Volume of water in cylinder = 60.2 mL Volume of water + metal in cylinder: 63.3 mL A) 2.54 g B) 475.0 g C) 5.81 g D) .832 g E) 24.5 g I 7) A student measured the diameter of a sphere and determined the average value. His measurements are 5.17 cm, 5.16 cm, and 5.17 cm If the true diameter is 6.18 cm, what can be said about the student's results? A) It is accurate and precise. B) It is accurate but not precise. O It is precise but not accurate. D) It is neither precise nor accurate. 8). Convert 100 cm3 to m3. A) 1 x 10-4 m3 B) 1 x 100 m3 C) 1 × 104 m3 D) 1 × 108 m3 9) The observation that hydrogen and oxygen can react to form two compounds with different chemical and physical properties, one having an O:H mass ratio = 8:1 and the other having an O:H mass ratio = 16:1 is consistent with the law of A) definite proportions. B) energy conservation. C) mass conservation. D) multiple proportions. 10) The existence of electrons in atoms of all elements was demonstrated by A) Millikan's oil drop experiment. B) Rutherford's gold foil experiment. CThomson's cathode ray tube experiment. D) None of the above. 11) Which of the following two atoms are isotopes? 40 A) 18 Ar and Ca B c and 1c C) Cl and 30 Br D) Mg and 12c ion
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