You prepared a diluted nh3 solution by diluting 8.46 (±0.04) ml of 28.0 (±0.5) wt% nh3 [density = 0.899 (±0.003) g/ml] up to 500.0 (±0.2)ml. the molar mass of nh3, 17.031 g/mol has uncertainty of 0.000. a) derive the expression for the final diluted concentration of nh3 as we discussed in class (5pt total, 4 pts for process, 1pt for final answer) c) calculate the final diluted concentration of nh3 based on the expression you derived in step b. (3pt total, 2 pts process, 1pt final answer) d) calculate the percent relative error in final diluted concentration of nh3 based on the expression you derived in step b, using error propagation rules. (6pt total, 5 pts process, 1pt final answer)

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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.

pv=nrt

explanation: