I have a hot air balloon that has 18.0 g helium gas inside of it. if the pressure is 2.00 atm and the temperature is 297k, what is the volume of my balloon?

Respuesta :

Answer: 54.86 L

Explanation:

Ideal gas equation:

PV = nRT

P: Pressure = 2.00 atm

V: Volume = ?

n: number of moles,

[tex] n= \frac{\text {Given mass}}{\text{Molar mass}} = \frac{18.0 g}{4.0 g/mol} = 4.5 mol [/tex]

R: Gas constant = 0.0821 Latm/molK

T: Temperature = 297 K

[tex]V = \frac{4.5 mol \times 0.0821 L atm/molK \times 297 K}{2.00 atm} = 54.86 L[/tex]