Based on their positions in the periodic table, predict which atom of the following pair will have the smaller first ionization energy Xe or I?​

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

How many atoms or molecules are there in a mole of a substance?

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.