Select all the correct answer(s) and explanation(s) for the following statement:

The transition state has a higher free energy than the substrate but not the product.

a. True, because the free-energy difference between the reactants and substrates accounts for the equilibrium of a reaction.
b. False, especially when the product is unstable; in this case, the product will have higher free energy than the substrate and the transition state.
c. While the statement is false, the given reasons for it being false are incorrect.
d. True, because the formation of transition state does not factor in the energy that is released when the transition state becomes a product.
e. False, because the transition state is a short-lived molecular structure that is no longer the substrate but is not yet the product – hence, the product will have a higher free energy. While the statement is true, the given reasons for it being true are incorrect.

The answer is c) while the statement is false, the given reasons for it being false are incorrect.

Explanation:

The speed of a chemical reaction must be proportional to the number of molecules per unit of time with enough energy to achieve the transition state. This transition state has an energy superior to that of the reagents and that of the products, establishing among them an energy barrier that has to be overcome in order for the reaction to take place.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible