Chemistry conversion

Question

What is the correct order of increasing temperatures in the set below?

• 80 F  18 C  280 K

Answer 1

Let us convert all to a common unit, say degrees C.

To convert from F to C use...

C = 5/9 (F-32)

C = 5/9 (80 - 32) = 5/9 (48) = 26.6º C

To convert from K to C use C = K-273

280 - 273 = 7ºC

 

So we now have 80F (26.6ºC), 18ºC and 280K(7ºC)

Arranged in order of increasing temperature we have...

280 K < 18 C < 80 F