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11 February, 08:07

a sample of 3.0 mols of hydrogren gas has a volume of 75ML. 1.5 mols of hydrogen is added if the pressure and temperature remains constant, calculate the final volume of the gas?

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Answers (2)
  1. 11 February, 11:12
    0
    37.5 mL.

    Explanation:

    We can use the general law of ideal gas: PV = nRT.

    where, P is the pressure of the gas in atm.

    V is the volume of the gas in L.

    n is the no. of moles of the gas in mol.

    R is the general gas constant,

    T is the temperature of the gas in K.

    If P and T are constant, and have different values of n and V:

    (V₁n₂) = (V₂n₁)

    Knowing that:

    V₁ = 75 mL, n₁ = 3.0 mol,

    V₂ = ? mL, n₂ = 1.5 mol.

    Applying in the above equation

    (V₁n₂) = (V₂n₁)

    ∴ V₂ = (V₁n₂) / n₁ = (75 mL) (1.5 mol) / (3.0 mol) = 37.5 mL.
  2. 11 February, 11:13
    0
    4.5 ML that is what i think
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