The North American record for highest recorded barometric pressure is 31.85 in. Hg, set in 1989 in Northway, Alaska.
1) Convert this pressure to millimeters of mercury
2) Convert this pressure to atmospheres.
3) Convert this pressure to torr.
4) Convert this pressure to kilopascals.
3 Answers

1. Note: 1 inch = 2.54 centimeters = 25.4 millimeters
31.85 in.Hg x (25.4 mmHg/1 inHg) = 808.99 mmHg
 Note: 1 atm = 760 mmHg
808.99 mmHg x (1 atm/760 mmHg) = 1.06 atm
 Note: 1 atm = 760 torr
808.99 mmHg = 1.06 atm = 1.06 torr
 Note: 1 atm = 101325 Pa; 1 kPa = 1000 Pa
1.06 atm x (101325 Pa/1 atm) x (1 kPa/1000 Pa) = 108 kPa
Thatâ€™s it!n_n

Convert Kpa To Inhg

1) 31.85 in. Hg * 25.4 mm / in. = 808.99 mm Hg
2) 1 atm = 760 mm Hg
808.99 / 760 = 1.0645 atm
3) Torr is the same as mm Hg, so this is 808.99 again.
4) 1 atm = 101.3 kPa
1.0645 * 101.3 = 107.83 kPa
I hope this helps.