The cold inflation pressure of many car tires is 30 lb/in², which is the gauge pressure. If
1 atm = 14.7 lb/in², what is the gauge pressure of a car tire in torr?

Question

The cold inflation pressure of many car tires is 30 lb/in², which is the gauge pressure. If 1 atm = 14.7 lb/in², what is the gauge pressure of a car tire in torr?

Quizplus · Accepted Answer

To convert the gauge pressure from lb/in² to torr, first convert it to atm: 30 lb/in² / 14.7 lb/in²/atm = 2.04 atm. Then convert atm to torr: 2.04 atm * 760 torr/atm = 1.55 * 10³ torr.

The Cold Inflation Pressure of Many Car Tires Is 30