In a lab experiment a mixture of salt, sand and water is given to students. The students separate out the sand by filtration. Then, the salt is separated from the water by distillation. Explain why the water, salt or sand cannot be broken further

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.