Molar mass of carbon monoxide (
) = 
Concentration of carbon monoxide (
) =
(given)
Since, 
So, the concentration of carbon monoxide (
) = 
a. ppmv stands for parts per million by volume is defined as the volume of a substance dissolved in one million parts per volume of the liquid.
The formula used for determining the volume is:

-(1)
where,
is volume,
is number of moles,
is universal gas constant,
is temperature and
is pressure.
For determining number of moles,
:


Temperature, 
Pressure,
= 
Substituting the values in formula (1):


Now converting
to ppmv as:


b. Percent by volume is calculated as:


%.