Kinetics

How many stable isotopes does Rn have?

none

For elements with 83 or more protons, what are their stable isotopes?

they do not have any stable isotopes

Larger isotopes have a ____ number of isotopes

larger

There are ____ known isotopes

3000

there are _____ known stable isotopes

250

____ occurs in the sun

fusion

Fission reactions produce energy on the scale of ______ kJ/mol.

millions to billions

fission is the

splitting of large unstable isotopes

fusion

combining of small particles

chemical bond reactions produce energy on the scale of ______ kJ/mol.

100s to 1000s

intermolecular reactions produce energy on the scale of ______ kJ/mol.

10s

_____ is the basis for nuclear bombs and power plants.

fission

alpha decay (α)

loss of 4/2 He

beta radiation (β⁻)

neutron converted to proton; electing electron

gamma radiation (γ)

electing photon

positron (β⁺)

proton converted to neutron; ejecting positron and electron neutrino

What type of emission is occurring in the following process? 

⁶⁷Sr^* → ⁶⁷Sr

Gamma

______ would plot a straight line to determine 1st order rate constant

ln[A] vs t

units for zero order

m/s

units for 1st order

1/s

units for 2nd order

m⁻¹s⁻¹

Which isotope is predicted to be the most stable isotope for Mg?

²⁴Mg

What order is this?

rate = k[A]²[B]

third order

As activation energy increases,

the rate constant, k, decreases.

temperature units must be in ____ for the Arrhenius equation

kelvin

Increasing the temperature ______ rate constant in arrhenius eq

increases

Activation energy (Ea) is the barrier to a reaction and is always ______, on the order of about ___________

positive; 5-500 kJ/mol.