The human body has an average temperature of `98^(@)F`. Assume that vapor pressure of the blood in the veins behaves like that of pure water. Find the minimum atmospheric pressure which is necessary to prevent the blood from boiling. Use figure for the vapor pressures.

Explanation

The temperature of body is `98^@ F = 37^@C` .
` At 37^@C `from the graph SVP = just less
than 50 mm
B.P. is the temperature when atmospheric
pressure equal the vapour pressure of the
blood. Thus minimum, pressure to prevent
boiling is 50 mm of Hg.