This is my homework that i got wrong . please provide detail steps When a solid

Question

This is my homework that i got wrong . please provide detail steps

When a solid is used to connect a hot temperature system (TH) with a cold temperature system (Tc), the rate at which energy is transferred is given by the following expression. Q/t=kA(TH-TC/L) where Q is heat, t is time, A is area, and L is a length. What are the units of the conductivity k in terms of fundamental SI units? A cylinder contains Neon gas (atomic'wejght 20.18g/mol) at 30 degree C. The pressure gauge on the cylinder reads 120psi (note that latm-14.7psi = 1.01 times 105 P. Answer the following two questions. What is the true pressure in Pa, what is the mass density of the Neon gas?

Explanation / Answer

rearrange the terms in the given weqn for K

so K = QL/At(Th-TL)

Qis heat expreesed in joules

L is length   expressed in meter

A = area = m^2

t is time in secs

Th-Tl)= change o temp in kelvin

so K = Joules * m/(m^2* secs* k)

so K = Joule/(meter -sec- kelvin)

b.from hugher tmep to lower temp

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