Gas Review Problem #7

7)  What is the density of nitrogen gas at STP (in g/dm3 and kg/m3)?

Write given information:

1 mole N2  =  28 g N2  =  22.4 dm3 @ STP

Write equation:       

Substitute into equation:     

Solve for Density:   Density  =  1.35 g/dm3

Recall:  1000 g  =  1 kg     &     1 m3  =  1000 dm3

                                                                                       

Convert m3 to dm3:

        x dm3  =  1 m3    =  1000 dm3

 

Convert:   

Solve:  1.35 kg/m3