Helium gas particles are single atoms that behave as an ideal gas.A container of helium gas is used to inflate an empty balloon. Immediately after inflation, the gas in the balloon has: • a pressure of 106 kPa• a temperature of 288 Ka volume of 1.40 × 10-2 m³. Show that the number of atoms in the balloon is approximately 3.7 x 1023 Each helium atom has a mass of 6.6 × 10-27 kg.Calculate the density of the gas in the balloon. ]The gas in the container has an initial temperature greater than 288 K. Explain, with reference to the first law of thermodynamics, why the temperature of the gas decreases as the balloon is inflated.

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