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PRACTICE CHEM

actual

QuestionAnswer
CH4 only london dispersion force
what's the predominant intermolecular force in CBr4 london dispersion force
what force is responsible for the fact that ice is less dense than liquid water? hydrogen bonding
how high a liquid will rise up a narrow tube as a result of capillary action depends on the magnitudes of cohesive forces in the liquid & adhesive forces b/w the liquid & the tube, and gravity
London dispersion forces tend to increase in strength with increasing molecular weight
the initial discovery of liquid crystal resulted from studies on cholestryl benzoate
basis of the VSEPR model of molecular bonding is electron domains in the valence shell of an atom will arrange themselves to minimize repulsions
the O-C-O bond angle in the CO3-2 ion is 120
the central Xe atom in the XeF4 molecule has 2 unbonded electron pairs & 4 bonded electron pairs in its valence shell
the electron domain geo & molecular geo will always be the same if there are no lone pairs in the central atom
molecular geometry of BeCl2 is linear & nonpolar
NCL3 is polar bc it has nonbonding pairs
molecular geometry of CHF3 tetrahedral & polar
molecular geometry of BCl3 trigonal planar, & nonpolar
molecular geometry of SF6 octahedral & nonpolar
according to the valence bond theory, which orbitals overlap in the formation of the bond in HBr? 1s on H & 4p on Br
Seesaw shape is TeCl4
the combination of 2 atomic orbitals results in the formation of 2 molecular orbitals
when 3 atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed? 3
in a polyatomic molecule, "localized" bonding electrons are associated with 2 particular atoms
delocalized b.electrons are associated with all of the atoms in the molecule
SO2 SO3 O3 NO3- delocalized bonding
the N-N bond in HNNH consists of one sigma bond & one pi bond
the hybridization of the terminal carbons in the H2C=C=CH2 molecule is sp2
2 electron domains is what hybridization? sp
structural changes around a double bond in the ________ portion of the rhodopsin molecule trigger the the chemical reactions that result in vision RETINAL
for a molecule with the formula AB3, molecular shape is trigonal planar, trigonal pyramidal, or T-shaped
molecular geometry of SF2 molecule is bent (2 bonding & nonbonding)
angles between sp2 orbitals are 120
what is the molecular geometry of a molecule that has 3 bonding & non bonding domains? t-shaped
what are the 3 bond angles in the trigonal bipyramidal structure? 90, 120, 180
the 1s hydrogen orbital overlaps with the ____ iodine orbital in HI 5p
a covalent bond in which overlap regions lie above & below an internuclear axis is pi bond
molecular orbital theory the stability of a covalent body is related to its bond order
H2S odor of rotting eggs
130 mm HG or torr systolic pressure is 1st measurement or max pressure when heart is pumping 120/80
what statement about atmospheric pressure is false with an increase in altitude, atm increases as well. NO. it DECREASES.
removal of ____ from the natural gas both purifies the natural gas & serves as an alternative method of production of an industrially imp. chemical element H2S
square root of (3*8.314*T)/ molecular mass X 10-3 root mean square speed
effuse R1/R2 = sq. root of R2/R1 square root of heavier over lighter
a real gas wil behave most like an ideal gas under conditions of high temperature & low pressure
noble gas with largest deviations from the ideal gas behavior XENON
the height of the mercury column at 1 atm is 760 mm
reaction of 50 ml N2 & 150 ml H2 produces 50 + (150/3 mols) = 100 ml
rxn of 25 & 75 ml 25 + (75/3) = 50 ml
P1/Ptotal = N1/Ntotal partial pressure
the van der waals eq. corrects the ideal gas law for the finite volume & attractive forces of gas molecules
Created by: szenitho
 

 



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