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cluponka [151]
3 years ago
13

A balloon is filled to a volume of 5.10l at a temperature of 27.1ºc. if the pressure in the balloon is measured to be 2.20 atm,

how many moles of gas are contained inside the balloon?
Chemistry
1 answer:
Leno4ka [110]3 years ago
5 0
We can find the number of moles in the balloon using the ideal gas law equation 
PV = nrT 
where 
P - pressure - 2.20 atm 
V - volume - 5.10 L
n - number of moles 
r - universal gas constant - 0.08206 LatmK⁻¹mol⁻¹
T - temperature in Kelvin - 27.1 °C + 273 = 300.1 K
substituting the values in the equation 
2.20 atm x 5.10 L = n x 0.08206 LatmK⁻¹mol⁻¹ x 300.1 K
n = 0.456 mol
number of moles of gas is 0.456 mol

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\large\boxed{\text{28 mol of O$_{2}$}}

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