The radius of a single atom of a generic element X is 189 picometers (pm) and a crystal of X has a unit cell that is body-centered cubic. Calculate the volume of the unit cell.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Pls asap how are the processes of cellular respiration, photosynthesis and carbon cycle related to each other?

When studying the halogens (group 17) on the periodic table, how does the number of the valence electrons change as the energy level is increased? a) the total number of valence electrons does not change, it remains 7. b) the total number of valence electrons does not change, it remains 1. c) the total number of valence electrons increases by 1 with each energy level. d) the total number of valence electrons decreases by 1 with each energy level.