Thermodynamic equilibrium:a thermodynamical system is said to be Thermodynamic equilibrium when macroscopic variables like pressure, temperature, volume etc that characterise the whole system don't change with time.
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In organic chemistry terms, a reaction mechanism is a formalized description of how a reaction takes place - how we get, in other words, from reactants to products.
if the zeroes are left of integral part or right of decimal part the zeroes become insignificant , .
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will tell u about crystallization