Chem Review MT3

KE=

½ mv²

Change in energy=

q+w

w=

-p (change in v)

H=

E + Pv

λv=

c

Change in E=

nhv

E_photon=

hv

E_photon=

hc/λ

Bohr’s Model Expression

E=-2.178 × 10^-18J (Z²/n²)

Min energy requires to remove an electron=

E₀

Min energy requires to remove an electron=

hv₀

m=

E/c²

m=

hc/λ

m=

h/λc

de Broglie’s

λ=h/mv

Heisenberg Uncertainty Principle

Change in x - change in (mv) > h/4pi

Change in Enthalpy

Sum of n x H_f (products)- sum of n x H_f (reactants)

Rewrite E=mc²

m=E/c²

E_electron=

hv-KE

First Law of Thermodynamics

Energy can neither be created nor destroyed; it can only be transferred from one mode to the other. The total energy in the universe is constant

Second Law of Thermodynamics

The total entropy of an isolated system always increases over time. It is never spontaneously hot or cold.

Third Law of Thermodynamics

As the temperature approaches 0, a system's entropy approaches a constant minimum. Absolute 0 (Kelvin) cannot be reached.

Zeroth law of Thermodynamics

A=B, B=C, A=C