4. Atmospheric pressure is the force exerted by particles in the atmosphere. In the lab, the atmospheric pressure is measured at 30.15 inches of Hg.

Given:
1 inch of Hg = 25.4 mmHg (exact)

What is this pressure in:
a) atm?
b) torr?
c) kPa?

Question

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Answer :

DamianDaniel DamianDaniel · Answer 1 · 2023-08-20T05:28:58-04:00

The atmospheric pressure can be converted to different units: 1 atm = 760 mmHg, 1 torr = 1 mmHg, and 1 atm = 101.325 kPa.

The atmospheric pressure can be converted to different units as follows:

a) To convert to atm, we use the fact that 1 atm = 760 mmHg.

So, the pressure in atm is 30.15 inches of Hg / 29.92 inches of Hg/atm = 1.01 atm.

b) To convert to torr, we use the fact that 1 torr = 1 mmHg.

So, the pressure in torr is 30.15 inches of Hg * 25.4 mmHg/inch = 766.61 torr.

c) To convert to kPa, we use the fact that 1 atm = 101.325 kPa.

So, the pressure in kPa is 30.15 inches of Hg * 25.4 mmHg/inch * 1 atm / 760 mmHg/atm * 101.325 kPa/atm = 101.8 kPa.