Which of the following best helps to explain why the atomic radius of K is greater than that of Br? A) The first ionization energy of K is higher than that of Br.

B) The valence electrons in K are in a higher principal energy level than those of Br.

C) In the ground state, an atom of K has fewer unpaired electrons than an atom of Br has.

D) The effective nuclear charge experienced by valence electrons is smaller for K than for Br.​

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

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.

Which of two curves exhibits exponential growth