Why does ch3ch2ch2cl have a lower boiling point than ch3ch2ch2oh?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

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)

Can someone me with 3 and 4 plz. this is for masteries test.