After 43.0 minutes, 34.0% of compound decomposed. what is the half-life of this reaction assuming first order kinetics?

34% decomposition means that 66% of the compound remained, meaning the ratio of current to initial concentration after 43 minutes was 0.66. The decomposition equation:

ln[A] = ln[Ao] - kt
ln( [A] / [Ao] ) = -kt

Now, we substitute the given values:
ln(0.66) = -k(43)
k = 9.66 x 10⁻³

half life = ln(2) / k
half life = 71.8 minutes.

The statement is : "to see the baby growing inside her".

Answer:

a. energy is absorbed in the reaction.

explanation:

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.