A15.5 kg block is pulled by two forces. the first is 11.8 n at a 53.7 angle and the second is 22.9 at a -15.8 angle. what is the direction of the acceleration

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions