, the correction for moisture would be made by
subtracting 12.7 from 750, and taking 737.3 mm. to be the true
barometric pressure.
The vapour tensions for temperatures from 0° C. to 20° C. are as
follows:--
-------+----------++-------+----------++-------+----------
Temp. | Tension. || Temp. | Tension. || Temp. | Tension.
-------+----------++-------+----------++-------+----------
0° | 4.6 mm. || 7° | 7.5 mm. || 14° | 11.9 mm.
1° | 4.9 mm. || 8° | 8.0 mm. || 15° | 12.7 mm.
2° | 5.3 mm. || 9° | 8.6 mm. || 16° | 13.5 mm.
3° | 5.7 mm. || 10° | 9.2 mm. || 17° | 14.4 mm.
4° | 6.1 mm. || 11° | 9.8 mm. || 18° | 15.3 mm.
5° | 6.5 mm. || 12° | 10.5 mm. || 19° | 16.3 mm.
6° | 7.0 mm. || 13° | 11.2 mm. || 20° | 17.4 mm.
-------+----------++-------+----------++-------+-----------
The _correction for pressure_ is:--Multiply the volume by the actual
pressure and divide by 760.
The _correction for temperature_:--Multiply the volume by 273 and divide
by the temperature (in degrees Centigrade) added to 273.
For all three corrections the following rules hold good. _To reduce to
0° C. and 760 mm. dry._
Volume ? 0.3592 ? (Pressure-tension)
Corrected volume = --------------------------------------
Temperature + 273
To find the volume, which a given volume under standard conditions would
assume, if those conditions are altered.
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