An intermediate step in the process that ultimately produces sulfuric acid, is the catalytic oxidation of so2 to so3. vanadium(v) oxide is the catalyst. the three chemical species in the reaction are in equilibrium as follows: 2so2(g)+o2(g)⇌2so3(g) which of the following are true statements about this reaction? when so2 is mixed with o2 in a container, the initial rate of the forward reaction (production of so3) is faster than the initial rate of the reverse reaction (production of so2). as so2 is used up and so3 accumulates, the rate of the forward reaction increases and the rate of the reverse reaction decreases. at equilibrium the rate of production of so3 reaches zero. at equilibrium the concentration of so2 will no longer be changing.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false