U-tube video: The genius of Mendeleev's periodic table Use at least 5 sentences to describe the “genius” of Mendeleev in the development of the Periodic Table of Elements.

Who is better, messi or cristiano, i need this for a chemistry class. asap

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?