A piece of copper alloy with a mass of 85.0 g is heated from 30oC to 45oC. In the process, it absorbs 523 J of energy as heat. What is the specific heat of this copper alloy? q=mCpΔT q: heat m: mass Cp: specific heat constant ΔT= T f-Ti T f: final temperature Ti: initial temperature

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

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.

Drug abuse will not lead to physical and psychological dependence. true or false ?