The internuclear distance between two closest ar atoms in solid argon is about 3.8 a. the polarizability of argon is 1.66e-30 m3, and the first ionization is 1521kj/mol. estimate the boiling point of argon [hint: calculate the potential energy due to dispersion interaction for solid argon, and equate this quantity to the average kinetic energy of 1mole of argon gas, which is (3/2)rt].

i'm confused about where to use the first inonization energy?

83.72 K

Explanation:

= Polarizability of argon =

I = First ionization = 1521 kJ/mol

r = Distance between atoms = 3.8 A

R = Gas constant = 8.314 J/mol K

T = Boiling point

Potential energy due to dispersion of gas is given by

Kinetic energy is given by

The potential and kinetic energy will balance each other

The boiling point of argon is 83.72 K

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most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).