Aperson weighs 540n on earth. what is the person's mass? in kg

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

Atomic nuclei of almost all elements consist of

Arrange the images in order to show how lake-effect snow occurs.