Idon't know how to solve for concentration:
if it requires 25.0 milliliters of 1.0 molar hcl to neutralize 45.0 milliliters of naoh, what is the concentration of the naoh solution?

balanced equation: naoh + hcl yields nacl + h2o

0.56 m naoh

0.82 m naoh

1.1 m naoh

1.8 m naoh

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.