A sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/ L at 0.0oC and 1.000 atm.
Answer to relevant QuestionsMetallic molybdenum can be produced from the mineral molybdenite (MoS2). The mineral is first oxidized in air to molybdenum trioxide and sulfur dioxide. Molybde-num trioxide is then reduced to metallic molybdenum using ...Consider the reaction between 50.0 mL of liquid methanol (CH3OH; density = 0.850 g/ mL) and 22.8 L of O2 at 27oC and a pressure of 2.00 atm. The products of the reaction are CO2(g) and H2O(g). Calculate the number of moles ...Nitric acid is produced commercially by the Ostwald process. In the first step, ammonia is oxidized to nitric oxide: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) Assume this reaction is carried out in the apparatus diagramed ...Consider the following samples of gases at the same temperature. Arrange each of these samples in order from lowest to highest. a. Pressure b. Average kinetic energy c. Density d. Root mean square velocity Some samples of ...One way of separating oxygen isotopes is by gaseous dif-fusion of carbon monoxide. The gaseous diffusion process behaves like an effusion process. Calculate the relative rates of effusion of 12C16O, 12C17O, and 12C18O. List ...
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