If a gas is initially at a pressure of 9 atm, a volume of 21 liters, and a temperature of 253 k, and then the pressure is raised to 15 atm and the temperature is raised to 302 k, what will be the resulting volume of the gas

It dont even matter because at the end of thre day we gone life like it ius s

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.