What is the total translational kinetic energy of 2.50 moles of carbon monoxide at 30 degrees Celsius? O 9.45 kJ 6.30 kJ O 6.27 x 10-21 J O 4.18 x 10-21 J O O O
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- What is the root-mean- Square Speed in mls of gas molecules with molar molecular weight 33 gimöl at a temperature of 87.29 °C? T=87.29°C + 273 33 gimol 360. 29 k = 0.033 kg/melA spherical balloon of volume 4.07 x 10³ cm³ contains helium at a pressure of 1.21 x 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x 10-2² J? molWhat is the vapor pressure of solid carbon dioxide (dry ice) at –78.5ºC–78.5ºC? The phase diagram for carbon dioxide. The axes are nonlinear, and the graph is not to scale. Dry ice is solid carbon dioxide and has a sublimation temperature of –78.5ºC–78.5ºC.
- Equal moles of three different ideal gases (A, B, and C) are prepared in separate sealed chambers at different temperatures. The velocity distributions for molecules of the three gases are shown below. The gases have different molecular masses which are not known. Which of the following statements about these gases MUST BE true? Number of Molecules B C Velocity Gas C has the greatest temperature. Gas A has the greatest average kinetic energy per molecule. O Gas C has the greatest average kinetic energy per molecule. O Gas A has the greatest molecular mass. O Gas C has the greatest rms speed. Next.A quantity of mercury occupies 400.0 cm³ at 0°C. What volume will it occupy when heated to 50°C? Mercury has a volume expansion coefficient of 180 x 10-6 K-1. 450 cm3 401.8 cm3 O403.6 cm³ O409.7 cm3One mole of hydrogen gas (molar mass = 2.0 g/mol) has an rms velocity of 2.0 x 10° m/s. To what temperature on the Celsius scale does this correspond? 3.2 x 105 °C O 4.8 x 104 C 3.2 x 102 °C 48°C 6.9°C
- A molecule in Earth's atmosphere at 20 °C has a most probable energy E = kT/2 = 2.02 ×10-21 J E = kT =4.04 ×10-21 J E = 3 k T / 2 = 6.1 ×10-21 J that depends on the mass of the moleculeAt what temperature (in Kelvin) will the diffusion coefficient for the diffusion of species A in metal B have a value of 5.92 × 10-16 m2/s, assuming values of 2.8 x 10-6 m?/s and 225,000 J/mol for Do and Qd, respectively? i KOn a cool morning in Alaska, when the temperature is -10.0 °C, the car tire pressure is 32 psi. Under strenuous driving, the tire heats up to 40.0 °C. What pressure will the tire gauge now ? O 17.5 psi O 20.6 psi O 38.0 psi O 40.9 psi O 55.6 psi