suppose 149 ml of a 0.181 m solution are added to a beaker containing 331 ml of water what is the finial concentration of the solution

0.0562 M

Explanation:

Number of moles before mixing = number of moles after mixing

M1V1 + M2V2 = M3V3

149*0.181 + 0*331 = M3(149 + 331)

149*0.181 = M3(149 + 331)

M3 = 149*0.181/(149 + 331) = 0.0562 M

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.