Which of the following questions can be answered by science

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin

Is 343 in the sequence -5, -2, 1, 4, 7

Why can water dissolve many ionic compounds