Answer:
The depth of the damage is given as 
Explanation:
From Fick's second law
![\frac{C_{x}-C_{0}}{C_{s}-C_{0}} = 1 -erf [\frac{x}{2\sqrt{Dt} } ] ...(1)](https://tex.z-dn.net/?f=%5Cfrac%7BC_%7Bx%7D-C_%7B0%7D%7D%7BC_%7Bs%7D-C_%7B0%7D%7D%20%3D%201%20-erf%20%5B%5Cfrac%7Bx%7D%7B2%5Csqrt%7BDt%7D%20%7D%20%5D%20...%281%29)
Where
is the temperature when the skin is damage
is the initial temperature of the skin
is the temperature of the oven
erf is a mathematical function known as error function
D is the thermal diffusivity
x is the depth of the damage
From the question we are given that
= 62°C
= 33°C
D = 
Substituting values into equation one
![\frac{62-33}{200-33} = 1 -erf [\frac{x}{2\sqrt{2.5*10^{-7}} *2} ]](https://tex.z-dn.net/?f=%5Cfrac%7B62-33%7D%7B200-33%7D%20%3D%201%20-erf%20%5B%5Cfrac%7Bx%7D%7B2%5Csqrt%7B2.5%2A10%5E%7B-7%7D%7D%20%2A2%7D%20%5D)
![erf[\frac{x}{1.414*10^{-3}} ] = 0.826\\](https://tex.z-dn.net/?f=erf%5B%5Cfrac%7Bx%7D%7B1.414%2A10%5E%7B-3%7D%7D%20%5D%20%3D%200.826%5C%5C)
Let assume that 
Hence
Looking at the table of error function shown on the first uploaded image
We can use interpolation to obtain the value of z in this manner
z = 0.96
Substituting the value of z into equation 2
I believe a. is the answer.
The enthalpy of fusion of a substance is the energy required to change the state of a substance from solid to liquid at a constant temperature. The enthalpy of fusion for iodine, I₂, will be higher. This is because there are stronger intermolecular forces holding the iodine molecules together. The stronger intermolecular forces arise from the fact that iodine is a much larger molecule, so it has much more electrons resulting in higher Van der Waal's forces. This is also visible in the fact that at room temperature, iodine is a solid while nitrogen is a gas.<span />
Answer:
Explanation:
A measurement is the action of measuring something, or some amount of stuff. So it is important to measure certain things right, distance, time, and accuracy are all great things to measure. By measuring these things or in other words, by taking these measurements we can better understand the world around us.
