Every day, a manufacturing plant produces 8.0 x 10' L of NaOH waste of molarity 0.040M. In order to comply with environmental regulations,
this NaOH must be neutralized before being discharged as effluent. What
mass of concentrated HCl will be required to neutralize it? (HCI) = 12M;
density = 1.2 kg/L)

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.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.