Temperature is a measure of molecular speed

Question

Rank the following temperatures in order of increasing molecular speed ( Start with the slowest and end with the fastest ) : 130 K 

100 C 

50 C 

253 K 

-50 C 

 

Answer 1

First off, convert all of your temperature values to one unit. 
Remember that the conversion for celsius to Kelvin is:
Kelvin Temperature = Celsius Temperature + 273

 

Thus:

100 C = 373 K

50 C = 323 K

-50 C = 223 K 

 

Temperature is measure of how fast particles are moving, so the higher the temperature, the faster the particles are moving. 

 

In order of increasing molecular speed:

130 K < -50 C < 253 K < 50 C < 100 C