Question

Two balloons are balanced on a scale. The pictures show what happens when one balloon is deflated. What must be true for the balloons to balance each other. *
1. The colour of the two balloons must be the same.
2. The scales used in the experiment must be very accurate.
3. The air in the balloons must be the same temperature.
4. The mass of the balloons and air inside them is the same.

Answer 1

Answer:

4.the mass of the balloons and air inside them is the same