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Find the volume occupied by 4.00 g of helium gas at
25.0o C and 1.18 atm of pressure.

User JD Graffam
by
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1 Answer

1 vote

Answer: 41.46 L

Step-by-step 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⁻¹

n = 2 mol

T =25⁰ + 273 ⁰K = 298 ⁰K

V = (2 mol ₓ0.082 L. atm / mol.°K x 298 ⁰K) / 1.18 atm = 41.46 L

User Ivan Smetanin
by
5.1k points