Which of the following includes an example of a chemical property of an element? a Aluminum is a solid at room temperature and is a poor thermal insulator. b Sulfur is not shiny and is not malleable c Sodium is a solid at room temperature and reacts with other elements d Silicon is Shiny and is a poor conductor of electricity

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

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.

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore