16 The half-life of uranium-235 is 700 million years. If there are 1000 g of uranium-235 in the original sample, what happens after 2100 million years have passed? Select all that apply One half-life has passed D. 125 g of the original sample remains . Two half-lives have passed. 250 g of the original sample remains C. Three half-lives have passed 500 g of the original sample remains.

As you move from right to left on the periodic table the atomic radius fill in the blank

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.

How does concentration affect reaction rate