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If a mixture of 2 moles of helium and 1 mole of neon are contained in a 10 dm³ container at stp. What would be the partial pressure of helium gas? Total pressure is 1.01x 10⁵ N/m²
Accepted Answer
The partial pressure of helium can be calculated using Dalton's Law of Partial Pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual gases.
Here's how to calculate it:
1. Mole fraction of helium: Since there are 2 moles of helium and 1 mole of neon, the mole fraction of helium is 2/(2+1) = 2/3.
2. Partial pressure of helium: The partial pressure of helium is equal to the mole fraction of helium multiplied by the total pressure. Therefore, the partial pressure of helium is (2/3)
(1.01 x 10⁵ N/m²) = 6.73 x 10⁴ N/m².
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