General Chemistry help Flashcards
formula for molecule weight
molecular weight= molecular mass= (grams acid)/(moles acid)
first order reaction, half life formula
kt(.5)= .693
density formula
D= m/v
what does % (w/w) mean?
g of substance/ g of solution
diamagnetic
all electrons are paired, not deflected by a magnetic field
paramagnetic
there re unpaired electrons; deflected by a magnetic field
avogadro’s number
6e23
M
molarity= moles of solute/liters of solution
henderson hasselbach eqn
pH=pKa +log (salt/acid)
when does H has a -1 charge?
when in hydride NaH, KH, LiH
ΔH?
ΔH=mcΔT
ideal gas law
PV=nRT
voltaic cell
+ Eº
gas-density calculations
P(MW)= DRT
Boyle’s Law
increase P, decrease V; constant T
Gay Lussac’s Law
increase P, increase T; constant V
Charle’s Law
increase V, increase T; constant P
q=?
mΔHvap
at equilibrium include? exclude?
for equilibrium systems, omit all solids and pure liquids from K expression
m
molality= #moles solute/ kG solvent temperature independent
O order reaction slope
-k ; [A] vs. t
1st order reaction slope
-k; ln[A] vs. t (nuclear decay will also exhibit this, but a perbolic shape graph with negative slope)