1. Gases: Pressure and Manometers
Dr. Chu
River Dell Regional High School

2. Force Pressure = Area Units of Pressure 1 Pascal (Pa) = 1 N/m2
Barometer
Pressure =
Units of Pressure
1 Pascal (Pa) = 1 N/m2
1 atm = 760 mmHg = 760 torr
= 101,325 Pa = kPa
= 14.7 psi

3. Pressure – examples Convert from 123,560 Pa to atm
Convert 45.7 psi to mmHg

4. Pressure – exercise Convert 1.5 atm to mmHg Convert 768 mmHg to kPa
Convert 235,620 Pa to psi
Convert 0.23 psi to torr

5. Pressure – exercise Answers
Convert 1.5 atm to mmHg [1140 mmHg]
Convert 768 mmHg to kPa [102.4 kPa]
Convert 235,620 Pa to psi [34.2 psi]
Convert 0.23 psi to torr [11.9 torr]

6. 10 miles
0.2 atm
4 miles
0.5 atm
Sea level
1 atm

7. Manometer – Closed

8. Manometer – Open (case 1)

9. Manometer – Open (Case 2)

10. Manometer – Open (Case 3)