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SSSSS [86.1K]
3 years ago
10

Una garrafa contiene 9L de gas a 18°C y 780torr. ¿Cuál será la masa de este gas que finaliza con una densidad de 2g/L a 80°C y 1

,5atm?
Chemistry
1 answer:
marin [14]3 years ago
7 0

Respuesta:

14,9 g

Explicación:

Paso 1: Calcular los moles de gas

Una garrafa contiene 9 L de gas a 18°C (291 K) y 780 Torr. Podemos encontrar los moles de gas (n) usando la ecuación del gas ideal.

P × V = n × R × T

n = P × V/R × T

n = 780 torr × 9 L/(62,4 Torr.L/mol.K)/ × 291 K = 0.387 mol

Paso 2: Calcular la masa molar del gas

El gas tiene una densidad (ρ) de 2 g/L a 80 °C (353 K) y 1,5 atm. Podemos calcular la masa molar (M) del gas usando la siguiente fórmula.

ρ = P × M / R × T

M = ρ × R × T / P

M = 2 g/L × (0.082 atm.L/mol.K) × 353 K / 1,5 atm = 38,59 g/mol

Paso 3: Calcular la masa del gas (m)

Usaremos la siguiente formula.

m = n × M = 0.387 mol × 38,59 g/mol = 14,9 g

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