Question

A sample of nitrogen gas collected at a pressure of 1.03 atm and a temperature of 279 K is found to occupy a volume of 568 milliliters. How many moles of N2 gas are in the sample

Answer 1

Answer: 0.025 moles of nitrogen gas are there in the sample.

Step-by-step explanation:

According to ideal gas equation:

`PV=nRT`

P = pressure of gas = 1.03 atm

V = Volume of gas = 568 ml = 0.568 L (1L=1000ml)

n = number of moles = ?

R = gas constant =
`0.0821Latm/Kmol`

T =temperature =
`279K`

`n=(PV)/(RT)`

`n=(1.03atm* 0.568L)/(0.0821L atm/K mol* 279K)=0.025moles`

0.025 moles of nitrogen gas are there in the sample.