The amount of manganese in steel is determined by changing it to permanganate ion. the steel is first dissolved in nitric acid, producing mn2+ ions. these ions are then oxidized to the deeply colored mno4- ions by periodate ion (io4-) in acid solution. (a) complete and balance an equation describing each of the above reactions. (type your answer using the format co2 for co2, (nh4)2co3 for (nh4)2co3, [nh4]+ for nh4+, and [ni(cn)4]2- for ni(cn)42-. use the lowest possible coefficients.) equation 1

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

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.