1- a) On this phase diagram, indicate 1) a melting point 2) a boiling...
1- a) On this phase diagram, indicate
1) a melting point
2) a boiling point
3) a sublimation point
4) the critical point
5) a triple point
6) an isotheral change
7) an isobaric change
8) a point where the degrees of freedom = 2
b) A liquid rises 5.85 cm in a capillary of diameter 0.300 mm. The density of the liquid is 0.81 g/cm3. The density of air above the liquid can be taken as zero. What is the surface tension of the liquid?
Homework Answers
ans.b
height= 5.85 cm
density= 0.81 g/cm2
radius= 0.300 mm =0.03 cm= 0.015 cm
g = 9.8
surface tension T= hprg/2
= 5.85x0.81x0.015x9.8 / 2
= 0.348dyn/cm
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