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Stephanie
Stephanie asked in Science & MathematicsChemistry · 6 years ago

An experiment shows that a 234 mL gas sample has a mass of 0.428 g at a pressure of 755 mmHg and a temperature of 26 ∘C. find molar mass.?

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  • Ash
    Lv 7
    6 years ago
    Favorite Answer

    V = 234 mL = 0.234 L

    m = 0.428 g

    P = 755 mmHg = (755/760) atm

    T = 26°C = 26 + 273 = 299 K

    M = ?

    PV = nRT

    PV = (m/M)RT

    M = mRT/PV = 0.428 x 0.082 x 299 / (755/760)*0.234 = 45.14 g/mol

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