The heterocyclopentadienes below contain more than one heteroatom. for each molecule, identify the orbitals occupied by each lone pair and determine whether the molecule is aromatic. for the sulfur and oxygen, two sets of lone pairs will each be in a different orbital, so place 2 orbitals in the box. note: if one or more labels are incorrectly placed, a single red x will appear on the top left.

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

Define a is a tiny pavket of energy