Which of the following changes is observed when we move across the row from left to right in the periodic table? Group of answer choices

Atomic radius increases

Atomic radius decreases

Number of protons decreases

Chemical reactivity of metals increases

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

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.

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?