1 atm. pressure is equivalent to 

Explanation:

• Pressure: When the force applied is perpendicular to the surface of objects per unit area, we get pressure.

The pressure is calculated by:

P = F/A (Force per unit area)

where F is the force and A is the area.

• The unit of pressure is Pascal (Pa). 
• The pressure is also measured in atm, bar, torr, etc.

Conversion:

1 atm = 760 torr = 760 mm Hg = 101325 Pa

1 torr pressure is equivalent to 1 mm of mercury (Hg)