PROBLEM 23P
Convert each measurement to atm.
(a) 1277 mm Hg
(b) 2.38 × 105 Pa
(c) 127 psi
(d) 455 torr
Solution 23P
Step 1:
(a) 1277 mm Hg
Pressure of gas = 1277 mm Hg
It is known that 1 atm = 760 mm Hg
Conversion factor used = 1 atm/ 760 mm Hg
We have multiply the given pressure of the gas in mmHg with the conversion factor, to calculate the pressure in the atmosphere.
Hence, 1277 mm Hg= 1.680 atm
Therefore the pressure of the gas in atmosphere is 1.680atm
Step 2:
(b) 2.38 × 105 Pa
Pressure of gas = 2.38 × 105 Pa
We will use the conversion factor, to convert the pressure in pa to atm.
pressure in atm = (pressure on Pa) (1 atm/1.01325 x 105 Pa)
= (2.38 × 105 Pa) (1 atm/1.01325
105 Pa)
=2.38 × 105 /1.01325 105 atm ((the Pa unit cancels out)
=2.3488 atm
Therefore the pressure of the gas in atmosphere is 2.3488 atm