Harrying Gaby for the feene Methode
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A compound is 39.90% Carbon, 53,40% Oxygen, and 6.70% Hydrogen. What is this
compound's empirical formula?
COH2
COH
CO2H2
C20H2

Particles vibrate in a rigid structure and do not move relative to their neighbors.

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)

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years