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Bookmark or Share- corrosion - Do I need to 'neutralise' iron/steel/metal with a base ...Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- Why do highly branched alkanes have higher octane numbers than their ...The reaction desired in an automobile piston is a rapid burning, not an explosion (very very rapid reaction). If the air + gasoline vapor burns much faster than the camshaft is turning, the explosion causes a ping, or high pressure rise in a smaller volume (because the piston has not moved far enoug
- How is the light from a fire emitted? - Chemistry Stack ExchangeLight is emitted from flames by two primary mechanisms: one is small particles glowing incandescently because they are hot (the same mechanism that drives an incandescent light bulb); the other is from electronic transitions from specific energy levels in excited atoms in the flame produces as a by product of the combustion process (this is partly why flames can coloured specifically by ...
- Why is the Gibbs free energy for phase changes zero at constant ...The liquid is not reforming. We are removing heat until all the liquid has changed to ice. Look back at the initial and final states that we identified. Whenever you are trying to determine changes in thermodynamic functions, it is important to precisely identify the initial and final states that you are considering. The system is not unchanged.
- Retinal 11-cis-retinal to all-trans induced by photonsIn the reaction involving conversion of 11-cis-retinal to all-transform, why does the isomerization specifically occur at the 11th carbon in the molecule? When reforming the broken pi-bond, why wouldn't it happen at the cis-conformation again? Is this due to the trans-form being more stable in this case and that it has a lower enthalpy?
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