How do scientists determine whether a chemical reaction releases or stores energy? A: Scientists can can calculate calculate the the bond bond energies energies of of the the reactants reactants and and the the products.

B: Scientists Scientists compare compare the the total total bond bond energies energies of of the the reactants reactants and and the the products.

C: Scientists Scientists know know that that each each chemical chemical has has its its own own unique unique bond bond energy.

D: All All of of the the above.

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What is the oxidation state of an individual bromine atom in nabro3?

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.