Answer to Question #243779 in Chemical Engineering for Potti

Question

3.Carbon monoxide (CO) is present in standard atmospheric air at a concentration of 50 ppm. Air density 1.185 kg/m and molecular weight is 28. Then what is the mass volume concentration (in micro grams /m') in the atmosphere? Explain the problem with step by step process

a) 12761

b) 79142 c) 28513 d) 57260

Answer 1

Step 1:

 CO concentration: 50ppm

Density: 1.185 kg/m 

Molecular weight : 28

Step 2:

 ppm = 

concentration(50ppm) x 1.185 kg/m 

molecular weight(g/mol) x 1000 (mL/m³*g) 

Step 3: Mass volume: 28513 

 Correct option is c