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4A) A new penny has a mass of 2.49g and a volume of 0.349cm³. Is the penny pure copper?

4A) A new penny has a mass of 2.49g and a volume of 0.349cm³. Is the penny pure copper?

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter1: Basic Concepts Of Chemistry
Section: Chapter Questions
Problem 14RPS: A piece of silver metal has a mass of 2.365 g. If the density of silver is 10.5 g/cm3, what is the...
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5) The highest fuel costs in the world are in Norway (unusual since it is a major producer of oil). If $1 = 6.03950 kr (Norwegian Krone), and fuel costs in Norway are typically listed as 15.37 kr/L, what is the cost in $/gal? 6) The units of of heat capacity are A) K/J or °C/J B) J/K or J/°C C) J/g-K or J/g-°c D) J/mol E) g-K/J or g-°C/J 7) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 Ib of water by 1°F. There are 453.59 g; °C = (5/9)(°F - 32°); specific heat of H2O (1) = 4.184 J/g-K. A) 3415 B) 60.29 C) 1054 joules in one Btu. 1 lb = D) 5.120 × 10-3 E) Additional information is needed to complete the calculation. 8) How many Significant figures are there in each of the following measurements? Place your answer in the box provided! 1.0030 cm 0.00002471 kg 10,000 yrs 65,229 min 32.90090 m 2.9000000 mm 9) Round each of the following to 3 significant figures. 2,300.2 707.5 0.0003350 10.26730 10) Convert each of the following into correct scientific notation. 10A) 1747 10B) 0.00000984
Transcribed Image Text:5) The highest fuel costs in the world are in Norway (unusual since it is a major producer of oil). If $1 = 6.03950 kr (Norwegian Krone), and fuel costs in Norway are typically listed as 15.37 kr/L, what is the cost in $/gal? 6) The units of of heat capacity are A) K/J or °C/J B) J/K or J/°C C) J/g-K or J/g-°c D) J/mol E) g-K/J or g-°C/J 7) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 Ib of water by 1°F. There are 453.59 g; °C = (5/9)(°F - 32°); specific heat of H2O (1) = 4.184 J/g-K. A) 3415 B) 60.29 C) 1054 joules in one Btu. 1 lb = D) 5.120 × 10-3 E) Additional information is needed to complete the calculation. 8) How many Significant figures are there in each of the following measurements? Place your answer in the box provided! 1.0030 cm 0.00002471 kg 10,000 yrs 65,229 min 32.90090 m 2.9000000 mm 9) Round each of the following to 3 significant figures. 2,300.2 707.5 0.0003350 10.26730 10) Convert each of the following into correct scientific notation. 10A) 1747 10B) 0.00000984
4A) A new penny has a mass of 2.49g and a volume of 0.349cm3. Is the penny pure copper?
Transcribed Image Text:4A) A new penny has a mass of 2.49g and a volume of 0.349cm3. Is the penny pure copper?
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