Helens in 1980, gas samples from the volcano were taken by sampling the downwind gas plume after the large eruption of Mount St. The unfiltered gas samples were passed over a gold-coated wire coil to absorb the Hg present in the gas. The mercury was improved from the coil by heating it, and then examined. In one particular set of experiments scientists found a mercury vapor level of 1800ng of Hg per cubic meter in the plume, at a gas temperature of 11 deg Celsius.
a. Determine the partial pressure of Hg vapor in the plume.
b. Determine the number of atoms per cubic meter in the gas.