can some one please help me please

Chemistry
Tutor: None Selected Time limit: 1 Day

Which has the smallest vapour pressure at 25°C? 



Which has the highest normal boiling point? 



Which has the least viscosity? 



Which has the greatest heat of vaporization? 



 H2S 

Feb 17th, 2015

sio2

nh3

ch3ch2oh

h20

please best

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Feb 17th, 2015

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