The mass of gas filling a 6 m ball in the lip is 7.5 kg, the density of the gas is equal.

These tasks: V (volume of gas in the balloon) = 6 m3; m (mass of gas in a ball) = 7.5 kg.

The density of the gas in the balloon can be determined by the formula: ρg = m / V.

Calculation: ρg = 7.5 / 6 = 1.25 kg / m3.

Answer: The balloon is filled with gas with a density of 1.25 kg / m3.

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