CHEM EXAM PREP - HELP ME :((((?

Posted on 2016-06-01 18:51:00 in Chemistry by LUREN

1. If the moles and temperature of a gas are held constant, the only way to increase the pressure would be to decrease the volume. 
a) True 
b) False 

2. The long hydrocarbon molecules that make up olive oil only possess weak London dispersion forces between them, yet olive oil is a viscous liquid. How is this possible? 
a) London dispersion forces are strong when molecules contain only C and H atoms. 
b) The regular, repeating shape of hydrocarbon molecules allows them to pack in a crystal structure. 
c) Hydrocarbons are more volatile than compounds that contain other kinds of atoms. 
d) The size of the molecules allows for the formation of many weak attractions with other molecules. 

3. The reason the vapor pressure increases with increasing temperature is due to the increased kinetic energies of the gas molecules. 
a) True 
b) False

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