A plasma-screen TV contains thousands of tiny cells filled
with a mixture of Xe, Ne, and He gases that emits light of
specific wavelengths when a voltage is applied. A particular
plasma cell, 0.900 mm * 0.300 mm * 10.0 mm, contains
4% Xe in a 1:1 Ne:He mixture at a total pressure of 66.66 kPa.
Calculate the number of Ne atoms in the cell and
state the assumptions you need to make in your calculation.
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