19. O, and O. (ozone) are allotropes of oxygen. Buckminsterfullerene (C) is another allotrope of carbon. Based on these statements and the information in Model 4, propose a definition for
allotrope

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

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)

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule