Name the EXOTHERMIC phase changing process in the diagram below:

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .