Consider an air-filled tire that has a volume of 1250 mL, filled to a total pressure of 85.5 psi, and a temperature of 26°C. Calculate the mass of the air in the tire. Assume that the average molar for air is 28.8 g/mol.

• A. 856 g
• B. 125 g
• C. 8.53 g
• D. 0.0103 g

Answer: (C)