A man weighs 72.15kg and want to fly in the sky with the aid of balloons itself weighing 20 kg and each containing 50 moles of H_(2) gas at 0.05 atm and 27^(@)C 1.25g//litre how many such types of ballons he is needed to fly in the sky ? .

A man weighs 72.15kg and want to fly in the sky with the aid of balloo

1.	A man weighs 72.15kg and want to fly in the sky with the aid of balloons itself weighing 20 kg and each containing 50 moles of H_(2) gas at 0.05 atm and 27^(@)C 1.25g//litre how many such types of ballons he is needed to fly in the sky ? .
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