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The atmospheric pressure on a certain da...

The atmospheric pressure on a certain day is `732 mm Hg`. What is the pressure in `kPa`?

A

`60 kPa`

B

`80.6 kPa`

C

`77.8 kPa`

D

`97.6 kPa`

Text Solution

Verified by Experts

The correct Answer is:
D
The relation between atmospheres and pascals is
1 atm = 101325 Pa
`= 1.01325 xx 10^(5) Pa`
Since `1000 Pa = 1 Pa ("kilopascal")`
1 atm = `1.01325 xx 10^(2) kPa`
Thus, the atmospheric pressure in `kPa` is
Pressure = `(732 mm Hg) xx ((1 "atm")/(760 mm Hg))xx ((1.01325 xx 10^(2) kPa)/(1 "atm"))`
` = 97.6 kPa`
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