What is tihe minimum temperature needed to dissolve 130 grams of kno3 in 100 grams of water

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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 element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)