Mount Everest rises to a height of 8,850 m above sea level. At a base camp on the mountain the atmospheric pressure is measured to be 314.0 mm Hg. At what temperature (in °C) will water boil at base camp ? The vapor pressure of water at 373 K is 760.0 mm Hg. (ΔH°vap for H2O = 40.7 kJ/mol and R = 8.314 J/mol K).
a. 344°C.
b. 70.8°C .
c. 2.91E-3°C .
d. 79.8°C.
e. 57.8°C.

Water will boil at .

Explanation:

According to clausius-clapeyron equation for liquid-vapor equilibrium:

where, and are vapor pressures of liquid at (in kelvin) and (in kelvin) temperatures respectively.

Here, = 760.0 mm Hg, = 373 K, = 314.0 mm Hg

Plug-in all the given values in the above equation:

                       or,

So,

Hence, at base camp, water will boil at

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

може ли да зареждате повече информация, моля