The table below presents the composition of the atmosphere at normal conditions (dry atmosphere at sea level): Note its similarity to the definition of the pH value.Ĭomposition of the Earth’s Atmosphere (Partial Pressures) The parameter pCO2 is related to the partial pressure P by: (1) Three different types of pressure units can be selected by the light gray drop-down list: The corresponding panel (right screenshot) is part of the main input window. The vapor pressure of water is 17.5 mm Hg at 20☌.In an open CO 2 System, DIC is determined by the CO 2 partial pressure. If the wet C2H2 gas formed occupies a volume of 8.81 L, the number of grams of C2H2 formed is _ g. The product gas, C2H2, is collected over water at a temperature of 20 ☌ and a pressure of 742 mm Hg.
The vapor pressure of water is 17.5 mm Hg at 20☌. If the wet H2 gas formed occupies a volume of 5.96 L, the number of moles of Al reacted was _ mol.
The product gas, H2, is collected over water at a temperature of 20 ☌ and a pressure of 758 mm Hg. The vapor pressure of water is 23.8 mm Hg at 25 ☌.Īluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following equation:ĢAl(s) + 2NaOH(aq) + 6H2O(l)2NaAl(OH)4(aq) + 3H2(g) If the wet C2H2 gas formed occupies a volume of 5.43 L, the number of moles of CaC2 reacted was _mol. The product gas, C2H2, is collected over water at a temperature of 25 ☌ and a pressure of 741 mm Hg. The partial pressure of neon in the flask is _ atm and the total pressure in the flask is _ atm.Ĭalcium carbide reacts with water to produce acetylene gas according to the following equation: The partial pressure of carbon dioxide in the flask is_ atm and the total pressure in the flask is _ atm.Ī mixture of helium and neon gases, in a 5.40 L flask at 66 ☌, contains 0.678 grams of helium and 3.28 grams of neon. The partial pressure of hydrogen in the flask is_ atm and the total pressure in the flask is _atm.Ī mixture of oxygen and carbon dioxide gases, in a 9.56 L flask at 83 ☌, contains 3.11 grams of oxygen and 10.6 grams of carbon dioxide.
If the volume of the gas sample is decreased to 6.95 L, while its temperature is decreased to -6.0☌, the resulting gas pressure will be_ torr.Ī mixture of helium and hydrogen gases, in a 5.21 L flask at 29 ☌, contains 0.254 grams of helium and 0.255 grams of hydrogen. If it is desired to increase the volume of the gas sample to 11.5 L, while increasing its pressure to 0.835 atm, the temperature of the gas sample at the new volume and pressure must be _☌.Ī sample of nitrogen gas occupies a volume of 8.22 L at 59.0☌ and 358 torr. The volume of the balloon at this altitude is_ L.Ī sample of nitrogen gas occupies a volume of 8.94 L at 57.0☌ and 0.650 atm. It is released and rises to an altitude of 3.33 km, where the pressure is 573 mmHg and the temperature is 1.9☌. The temperature of the CH4 gas sample is _ ☌.Ī helium-filled weather balloon has a volume of 867 L at 23.9☌ and 754 mmHg. The volume of the sample is_ L.Ī 4.85 gram sample of methane gas has a volume of 876 milliliters at a pressure of 3.35 atm. The pressure of this gas sample is_ mm Hg.Ī sample of oxygen gas collected at a pressure of 622 mm Hg and a temperature of 298 K has a mass of 25.8 grams. 1.47 mol sample of argon gas at a temperature of 12.0 ☌ is found to occupy a volume of 24.5 liters.
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