1 m of air at atmospheric condition weighs approximately__________________?
A. 0.5 kg
B. 1.0 kg
C. 1.3 kg
D. 2.2 kg
E. 3.2 kg
A. 0.5 kg
B. 1.0 kg
C. 1.3 kg
D. 2.2 kg
E. 3.2 kg