A gaseous mixture consists of 1.41 mol of helium, 0.36 mol of neon, and 1.58 mol of argon.
What is the mole fraction of helium in the mixture? ______
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1.2 mol of helium is mixed with 2.3 mol of argon in a volume of 1.0L and a temperature of 25.0C. Assuming that helium and argon are perfect gases, what is the pressure of the mixture?
A mixture of helium and neon gases has a density of 0.3146 g/L at 21.5°C and 400 torr. What is the mole fraction of neon in this mixture?
A mixture of helium and neon gases has a density of 0.285 g/L at 31.0°C and 374 torr. Find the mole fraction of neon in this mixture.