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MacRoscopic Properties: The World We See

Phases of Matter and Intensive Properties

What are the basic units of pressure?

Unlike units of length and temperature, pressure is reported in at least six common units. The pascal (abbreviated Pa) is the official standard unit, but bar, millimeters of mercury (mmHg), standard atmospheres (atm), torr, and pounds per square inch (psi) are all used in different areas.



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