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Cloyd Tremblay ∙
Out of the air. There is a lot of carbon dioxide in the air. You exhale carbon dioxide, because your cells use oxygen and turn it into carbon dioxide.
An increase in entropy.
The crystalline structure of the solid most determine the entropy of a solid.
Reactions that increase the moles of gas will increase in entropy.
H = 28 kJ/mol, S = 0.109 kJ/(molK)
G = 0 kJ/mol
Thermodynamics
Entropy tends to increase in a system.
Only one requires air molecules to generate lift.
if H and S are both negative
Chemical rocket
to simplify the design of the rocket.