Question

penalty 04 Question (4 points) See page 289 A balloon is filled to a volume of 15.9L at a temperature of 27.1°C. If the pressure in the balloon is measured to be 2.20 atm, how many moles of gas are contained inside the balloon? 2nd attempt hi See Periodic Table See Hint

Answer 1

Given

Volume = 15.9 L

Temperature = 27.1 °C = (27.1+273.15) K = 300.25 K

Pressure = 2.20 atm

Using ideal gas equation

PV = nRT

R is universal gas constant = 0.08206 L atm/mol K

n is the no of moles

So

n = PV/RT

= (2.20 atm * 15.9L)/(0.08206 L atm/mol K * 300.25 K)

= 1.42 moles

1.42 moles of gas are contained inside the balloon