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1. An expensive vacuum system can achieve a pressure as low as 1.00 x 10-10 N/m at 17.5 .C. How many atoms N are there

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An expensive vacuum system can achieve a pressure as low as 1.00 x 10-10 N/m at 17.5 .C. How many atoms N are there in a cubic centimeter at this pressure and temperature? The Boltzmann constant k = 1.38 x 10-23 J/K. 2.47 x10 N = atoms IncorrectSuppose that the root-mean-square velocity Urms of carbon dioxide molecules (molecular mass is equal to 44.0 g/mol) in a flame is found to be 1.05 x 103 m/s. The Boltzmann constant is k = 1.38 x 10-2 J/K. Avogadro's number is NA = 6.022 x 1023 mol-1. What is the temperature T of the carbon dioxide molecules? T = KIf you have 0.426 m' of water at 25.0 .C in an insulated container and add 0.132 m' of water at 95.0 'C, what is the final temperature If of the mixture? Use 1000 kg/m' as the density of water at any temperature. If = .CAn experiment is performed on an unknown material and produces the given heat curve. The temperature of the material is shown as a function of heat added. In the table, 71 = 47.7 .C, E1 = 153 J, E2 = 836 J, E3 = 1410 J, and E4 = 2850 J. Other experiments determine that the material has a temperature of fusion of Tfusion = 237 C and a temperature of vaporization of Tvapor = 481 .C. If the sample of material has a mass of m = 9.20 g, calculate the specific heat when this material is a solid, cs, and when it is liquid, q1. CS g . C g . CThe robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 13.3 W. HooRU's surface area is 1.73 m and the emissivity of its surface is 0.219. Ignoring the radiation that HooRU absorbs from the cold universe, what is HooRU's temperature T? T = KYou have a 96.7 cm long copper rod with a rectangular cross section of dimensions 5.87 cm by 7.99 cm. You maintain the ends of the rod at 53.9 .C and 82.5 C, but otherwise insulate the rod from its environment. Find the heat current (the amount of heat thu Enter numeric value are time) through the rod. The thermal conductivity of copper is 385 W/(m.K). heat current: W

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