Question

How many moles of nitrogen gas are in a flask with a volume of 0.25 L at a pressure of 2.96 atm and a temperature of 300 K

Answer 1

Answer: The number of moles of nitrogen gas is 0.030 moles

Step-by-step explanation:

To calculate the number of moles of nitrogen, we use the equation given by ideal gas which follows:

`PV=nRT`

where,

P = pressure of the nitrogen gas = 2.96 atm

V = Volume of the gas = 0.25 L

T = Temperature of the gas = 300 K

R = Gas constant =
`0.0821\text{ L. atm }mol^(-1)K^(-1)`

n = number of moles of nitrogen gas = ?

Putting values in above equation, we get:

`2.96atm* 0.25L=n* 0.0821\text{ L. atm }mol^(-1)K^(-1)* 300K\\\\n=(2.96* 0.25)/(0.0821* 300)=0.030mol`

Hence, the number of moles of nitrogen gas is 0.030 moles