The normal boiling point of water is C) the one measured at 760 mm pressure (1 atm)
Explanation:
The boiling point of water corresponds to 100 ° C (373 K) under pressure conditions of 1 atm (or 760 mmHg or 1013 hPa). It corresponds to the temperature by which the liquid is converted into steam and the point at which vapor pressure is equal to the external atmospheric pressure.
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liquefies at
. About 1% of the air is still gas composed of the noble gas Argon, Ar.