Chapter 8.1 Flashcards by Maks Taghizada | Brainscape

Q

State the different SI units for pressure. Note mention atm, mmHg, torr and kPA

A

1atm=760 mmHg=760 torr=101.325 kPa

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Q

At what conditions do many processes involving gases take place in?

A

they take place under standard temperature and pressure

- >these conditions are 273 K, and 1 atm

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Q

Explain why mercury rises in a barometer

A

atmospheric pressure creates a downward force on the pool of the mercury at the base of the barometer
> mercury exerts an opposing force based on its density
when the external air exerts a higher force than the weight of the mercury in the column, the column rises
when the external air exerts a lower force than the weight of the mercury in the column, the column falls

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