What is the Dewey decimal number for thermodynamics?

The Dewey Decimal number for thermodynamics is 536.7.

Here's a breakdown of how this works:

* 500: This represents the general category of "Pure Science"

* 530: This represents the sub-category "Physics"

* 536: This represents the sub-category "Heat" within physics

* 536.7: This is a more specific sub-category within "Heat" that covers the study of Thermodynamics.