Question

We can make Helium into liquid at 4 K, what is this temperature in Fahrenheit scale?

Answer 1

Answer: $-452.47^oF$

Explanation:

Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like $^0C$ and $K$  

These units of temperature are inter convertible.

We are given:

Temperature of helium = $4K$

The conversion used for the temperature from Kelvin to Fahrenheit is:

$^oC=\frac{5}{9}\times (^oF-32)$

As we know that, $K=^oC+273$ or, $K-273=^oC$

$K-273=\frac{5}{9}\times (^oF-32)$

$K=\frac{5}{9}\times (^oF-32)+273$ ...........(1)

Now put the value of temperature of Kelvin in (1), we get:

$4K=\frac{5}{9}\times (^oF-32)+273$

$T=-452.47^oF$

Thus the temperature of helium is  $-452.47^oF$