You put a bottle of soft drink in a refrigerator and leave it until its temperature has dropped 12.0K.

A. What is its temperature change in F?

B. What is its temperature change in C?

Answer: a) - 437.8° F, b) - 261°c.

Explanation: a) the kelvin and Fahrenheit temperature scale are related by the formulae below.

5 (°F - 32) = 9 (k - 273)

Where °F = temperature in Fahrenheit and k = temperature in kelvin.

For question A, k = 12.0, by substituting to have the value for °F, we have

5 (°F - 32) = 9 (12 - 273)

5 (°F - 32) = 9 (-261)

5 (°F - 32) = - 2349

°F - 32 = - 2349/5

°F - 32 = - 469.8

°F = - 469.8 + 32

°F = - 437.8

Question B

The centigrade and kelvin scale are related by the formulae below

°c = k - 273

Where °c = temperature in centigrade and k = temperature in kelvin = 12

°c = 12 - 273

°c = - 261