1607Mechanical EngineeringMedium
What is the weight (in lbf) of one gallon of air at 1 atm and 25 ̊C? The molecular mass of air is 28.97 g/mole = 0.02897 kg/mole
A90 lbf
B65.78 lbf
C3.00989 lbf
D0.00989 lbf
Correct answer
D. 0.00989 lbf
Explanation
The correct answer is 0.00989 lbf.