Calculate the kinetic energy of nitrogen at 300°K. [Molecular weight of nitrogen is 28. Universal gas constant (R) is 8310 J/k mole °K]
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![Calculate the kinetic energy of nitrogen
at 300°K. [Molecular weight of nitrogen is 28.
gas constant (R) is 8310 J/k mole °K]
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- You need to design a gas with a y (= Cp/Cv) value of 1.5. While no individual gas has this value, you could produce such a gas by mixing together a monatomic gas and a diatomic gas. What fraction or percentage of the molecules in the mixture needs to be monatomic? [Hint: for a monatomic gas Cv = (3/2)R and for a diamotic gas Cy (5/2) R.] =The pressure of an ideal gas is slowly increased to double its original pressure with no change in temperature. What happens to the volume? It does not change. It halves. It quadruples. It doubles.A gas, while expanding under isobaric conditions, does 490 ] of work. The pressure of the gas is 1.45 x 105 Pa, and its initial volume is 1.70 x 10-3 m3. What is the final volume of the gas?
- (a) An ideal gas occupies a volume of 2.6 cm at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. molecules (b) If the pressure of the 2.6-cm volume is reduced to 1.8 x 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container? mol(a) An ideal gas occupies a volume of 1.2 cm³ at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. molecules (b) If the pressure of the 1.2-cm³ volume is reduced to 2.2 x 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container? mol(a) How many molecules are present in a sample of an ideal gas that occupies a volume of 1.90 cm3, is at a temperature of 20°C, and is at atmospheric pressure? molecules (b) How many molecules of the gas are present if the volume and temperature are the same as in part (a), but the pressure is now 1.80 ✕ 10−11 Pa (an extremely good vacuum)? molecules
- The temperature of 3.00 moles of argon gas is lowered from 2.50 102 K to 2.00 102 K. (a) Find the change in the internal energy, ΔU, of the gas. J(b) Find the change in the average kinetic energy per atom.A 1.70-mol sample of hydrogen gas is heated at constant pressure from 302 K to 426 K. (a) Calculate the energy transferred to the gas by heat. kJ (b) Calculate the increase in its internal energy. k] (c) Calculate the work done on the gas. kJ(a) How many atoms of helium gas fill a spherical balloon of diameter 30.6 cm at 23.0°C and 1.00 atm? Enter a number lationship between pressure, volume and temperature for an ideal gas? atoms (b) What is the average kinetic energy of the helium atoms? (c) What is the ms speed of the helium atoms? km/s