Your A child receives a balloon filled with 35 L of
helium from a vendor at an amusement park.
The temperature outside is 303 K. What will
the volume of the balloon be when the child
brings it home to an air-conditioned house at
296 K? Assume that the pressure stays the
same.
Answer in units of L.

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. 

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

Answerlimiting reactant;

The answer will be +250