A spherical balloon with radius 25 cm is filled with hydrogen gas. IF the weight of the rubber is 20 g, what is the weight of the balloon.

Asked on by torrip996

1 Answer | Add Yours

justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

A spherical balloon of radius 25 cm is filled with hydrogen gas. The volume of a sphere of radius r is `(4/3)*pi*r^3` .

The volume here is `(4/3)*pi*r^3 = (4/3)*pi*25^3` = 0.0654 m^3 = 65.4 liters. Assume the gas in the balloon is at STP, 1 mole of hydrogen has a volume 22.4 liters. Its mass is 2 g.

The mass of 65.4 liters is 5.84 g. The mass of the rubber balloon is 20 g.

The total mass of the balloon filled with hydrogen is 25.84 g

We’ve answered 319,852 questions. We can answer yours, too.

Ask a question