Which description is evidence for theory of plate tectonics but does not suggest that the continents were once connected

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)

Which metals are called noble metals

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate