Which phrase correctly describes the molecular structure within a molecule?(1 point) A the location of atoms, groups, or ions relative to one another and the number, type, and location of covalent bonds

B long, repeating chains of molecules

C the smallest fundamental unit of a compound that participates in reactions, represented by a bonded group of atoms

D the basic unit of a chemical element

the basic unit of a chemical element

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43.452

step-by-step explanation:

284 times .153 = 43.452

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.