Answer
126.83 K (-231.1 farenheit)
Step-by-step explanation
The given critical temperature of the three substances are:
93.0 K, -250.0 celsius and -231.1 farenheit.
To know which of these conductors has the highest Tc, value, you need to convert the given critical temperatures to kelvin
Conversion of -350.0 celsius to kelvin.
From celsius to kelvin, add 273 K, that is
Conversion of -231.1 farenheit to kelvin.
From farenheit to kelvin, use the conversion formula below:
So, the critical temperature of the three substances in kelvin are:
93.0 K, 23.0 K and 126.83 K.
Hence, the conductors that has the highest Tc, value is 126.83 K (-231.1 farenheit).