Uracil is one of the Four nuleotide monomers that make up the nucleic acid RNA. uracil acid and has a molar
mass of 112g/mol. A biologist prepares a solution of the
acid by dissolving 1.24g of the compound in 1.0L of solution. The pH of the Solutionis 5.71. Calculate the
acid-dissociation Constant ka for uracil. what percent of its molecule were dissociated in the solution

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.