MCAT equations

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wiener123
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299304
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MCAT equations
Updated:
2015-03-27 11:19:45
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MCAT
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  1. Saturation Kinetics
    v=(vmax[S])/K+ [S]

    *at 1/2 vmax, [S]=km
  2. Hardy-Weinberg equilibrium
    • p2+2pq+q2=1
    • p+q=1

    • p=freq. of dom. allele
    • q=freq. of rec. allele
    • p2=freq. of dom homo
    • 2pq=freq. of hetero
    • q2=freq. of rec. homo
  3. Moles
    mass of sample/molar mass
  4. Energy of electron
    E=-RH/n2
  5. Electromagnetic energy of photons
    E=hc/λ
  6. constant-volume and pressure calorimetry
    q=mcΔT

    • q=heat absorbed or released
    • m=mass
    • ΔT=change in temp.
  7. Standard heat of reaction(ΔH°f)
    ΔHrxn=(sum of ΔHf of products) - (sum of ΔHof reactants)
  8. Bond enthalpy
    ΔHrxn=ΣΔHbonds broken-ΣΔHbonds formed
  9. Entropy(S)
    ΔSuniverse=ΔSsystem+ΔSsurroundings
  10. Gibbs free energy(G)
    ΔG=ΔH-TΔS

    • *negative G=spontaneous 
    • *pos. G = nonspontaneous
    • *G=0 means equilirbrium and ΔH=TΔS
  11. Boyles Law
    PV=k or P1V1=P2V2
  12. Charles Law
    V1/T1=V2/T2
  13. Gay-Lussac's Law
    P1/T1=P2/T1
  14. Avagadros principle
    n/V=k
  15. Combined Gas Law
    P1V1/T1=P2V2/T2
  16. Ideal Gas Law
    PV=nRT
  17. Van der Waals equation of state
    (P+(n2a)/V2)(V-nb)=nRT

    • a=intermolecular attraction
    • b=volume of gas particles themselves
  18. Daltons Law of partial pressure
    PT=PA+PB+PC

    PA=PTXA

    *
    XA=(moles of A)/(total moles)
  19. average molecular speeds
    K=.5mv2=3/2kbT
  20. Root-mean-squared speed
    urms=sqrt(3RT/M)
  21. Osmotic Pressure
    Π=MRT
  22. %comp by mass
    Mass of solute/mass of solution X 100%
  23. Molarity
    # of mol of solute/liter of solution
  24. Molality
    # of mol of solute/ kg of solvent
  25. Normality
    # of grams of equivalent weights of solute/liter of solution
  26. pH
    pH=-log[H+]=log(1/H+)
  27. H2O (l) ⇔H+ (aq) + OH(aq)
    kw=[H+][OH-]=10-14
  28. Henderson-Hasselbach equation
    pH=pKa+log([conj base]/[weak acid])
  29. Standard electromotive force (emf)
    emf=Ered,cathode-Ered,anode
  30. Gibbs free energy (electrochemistry)
    deltaG=-nFEcell
  31. Equations of Liner Motion
    v=v0+at

    x=v0t+.5at2

    v2=V02 + 2ax


  32. Newtons Law of Gravitation
    F=Gm1m2/r2
  33. Uniform Circular motion
    ac=v2/r

    Fc=mv2/r
  34. Power
    W/delta t
  35. Kinetic energy
    K=.5mv2

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