what is the weight of the balloon with air

To determine the weight of a balloon filled with air, you need to know the volume of the balloon and the density of the air.

1. Start by measuring the volume of the balloon. You can do this by either filling the balloon with a known volume of air or by measuring the amount of water the balloon displaces when submerged in a container. If you're using water, make sure the balloon is dry before measuring.

2. Now, find the density of air. Air density can vary based on factors like temperature and altitude, but for most cases, you can assume the density of air at sea level and room temperature to be approximately 1.225 kilograms per cubic meter (kg/m^3).

3. Calculate the weight of the air in the balloon by multiplying the volume of the balloon by the density of air.

For example, let's say the volume of the balloon is 0.5 cubic meters, and the density of air is 1.225 kg/m^3. The weight of the air in the balloon would be:

Weight = Volume x Density
Weight = 0.5 m^3 x 1.225 kg/m^3
Weight = 0.6125 kilograms (or 612.5 grams)

So, the weight of the balloon with air would be approximately 0.6125 kilograms (or 612.5 grams).