15. (5 points) Select the predominant concept or word from the list below that a
ID: 105018 • Letter: 1
Question
15. (5 points) Select the predominant concept or word from the list below that applies to the following situations. Write your answer in the blank. Answer FIVE of nine situations Only the FIRST five with answers will be graded. If you answer more than five, the last three answers will be ignored Choose carefully!! List of some concepts discussed in Chem 1303 this semester A. PV nRT B. E hy C Molecular polarity (polar vs nonpolar) D. Covalent crystal E. ion dissociation and electrolytes F. Vapor pressure of water G Delocalized bond IH Hydrogen bonding Paul exclusion principle K Ice melts under increasing pressure Hund's rule Situations: Water boils at lower temperature at the top of Mountain Everest People could skate on the surface of ice Electrical equipment should not be operated with wet hands Graphite is good electricity conductor Microwave cannot heat dry ice effectively Tires should not be inflated to high pressure in summer Diamond is one of the hardest material on earth Ice floats/Formation of frost heaves and pot holes in pavement Neon lights have many different colorsExplanation / Answer
pV = nRT is the ideal gas law , that applies to the properties of the ideal gases. The boiling point of the liquid deprends on the vapor pressure.
So The concepts applying to the situations are :
F. Vapor pressure of water : Water boils at lower temperature at the top of Mountain Everest.
E. Ion dissociation and electrolytes : Electrical equipments should not be operated with wet hands.
G. Delocalised bond : Graphite is good electricity conductor
A . pV = nRT : Tires should not be inflated to high pressure in summer
D. Covalent crystal : Diamond is one of the hardest material on earth.
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