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11 September, 23:43

Find the volume occupied by 4.00 g of helium gas at

25.0o C and 1.18 atm of pressure.

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Answers (1)
  1. 12 September, 00:33
    0
    Answer: 41.46 L

    Explanation:

    La ecuación que describe relación entre presión, volumen, temperatura y la cantidad (en moles)

    de un gas ideal es: PV = nRT

    Donde: P = Presión absoluta, V = Volumen, n = Moles de gas, R = Constante universal de los gases ideales, T = Temperatura absoluta,

    R = 0.082 L. atm/mol. °K

    V = nRT/P

    Calculanting n

    n = mass / molecular mass

    n = 4 g / 2g. mol⁻¹n = 2 molT = 25⁰ + 273 ⁰K = 298 ⁰KV = (2 mol ₓ0.082 L. atm / mol.°K x 298 ⁰K) / 1.18 atm = 41.46 L
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