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What is the volume of 6.9 mol oxygen (O2) gas at 233 K and a pressure of 4.0 atm?(The universal gas constant is 0.0821 L•atm/mol•K.)A.0.30 LB.33 LC.11 LD.530 LSUBMITarrow_backPREVIOUS

Question

What is the volume of 6.9 mol oxygen (O2) gas at 233 K and a pressure of 4.0 atm?(The universal gas constant is 0.0821 L•atm/mol•K.)A.0.30 LB.33 LC.11 LD.530 LSUBMITarrow_backPREVIOUS

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Solution

Para resolver este problema, utilizaremos la ecuación del gas ideal, que es:

PV=nRT PV = nRT

Donde:

  • P P es la presión (en atmósferas, atm)
  • V V es el volumen (en litros, L)
  • n n es el número de moles
  • R R es la constante universal de los gases (0.0821 L·atm/mol·K)
  • T T es la temperatura (en Kelvin, K)

Dado:

  • n=6.9 n = 6.9 moles
  • T=233 T = 233 K
  • P=4.0 P = 4.0 atm
  • R=0.0821 R = 0.0821 L·atm/mol·K

Queremos encontrar V V . Reorganizamos la ecuación para resolver V V :

V=nRTP V = \frac{nRT}{P}

Sustituimos los valores dados:

V=6.9×0.0821×2334.0 V = \frac{6.9 \times 0.0821 \times 233}{4.0}

Primero, calculamos el numerador:

6.9×0.0821=0.56649 6.9 \times 0.0821 = 0.56649 0.56649×233=132.00057 0.56649 \times 233 = 132.00057

Luego, dividimos por el denominador:

V=132.000574.0=33.0001425 V = \frac{132.00057}{4.0} = 33.0001425

Redondeando a dos cifras significativas, obtenemos:

V33 V \approx 33

Por lo tanto, la respuesta es:

B. 33 L

This problem has been solved

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