Question

your friend claims that a balloon will shrink when you cool it down while keeping pressure constant. are they correct? yes because charles law states as temperature decreases, volume decreases. yes because guy - lussacs law states that as temperature decreases, volume decreases. no, because guy - lussacs law states that as temperature decreases, volume decreases. no because charles law states as temperature decreased, volume increases

Explanation:

Charles' Law states that for a given mass of gas at constant pressure, the volume is directly proportional to the absolute temperature. So when the temperature of a gas - filled balloon is decreased while pressure is kept constant, the volume of the gas inside the balloon (and thus the size of the balloon) decreases. Guy - Lussac's Law relates pressure and temperature at constant volume.

Answer:

Yes because Charles' Law states as temperature decreases, volume decreases.