Manufacturing traditional clayware ceramics typically involves driving off the water of hydration in the clay minerals. the rate constant for the dehydration of kaolinite, a common clay mineral, is 1×10−4s−1 at 485 ∘c and 1×10−3s−1 at 525 ∘c. calculate the activation energy for the dehydration of kaolinite.

The relation between activation energy, rate constant and temperature is given by Arrhenius equation

Arrhenius equation is

ln (K2/ K1) = Ea / R (1/T1- 1/T2)

K2 =  1×10−3s−1  T2 =  525 ∘C = 798 K

K1 = 1×10−4s−1  T1 =  485 ∘c = 758 K

Ea = ?

R = gas constant = 8.314 J / mol K

ln (K2/ K1) = ln (10^-3 / 10^-4) = 2.303 = Ea /8 .314 (1/758 - 1 / 798)

2.303 = Ea / 8.314 (0.00132 - 0.00125)

Ea = 2.303 X 8.314 / (0.00132 - 0.00125)  = 273530.6 J / mole

Ea = activation energy = 273.531 kJ / mole

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates