Question

a balloon of helium has a volume of 1.0 l at 0.98 atm. the balloon floats in the sky until the pressure is 0.50 atm. what is the new volume assuming temperature is constant?

Answer 1

According to the given statement 1.96 L  is the new volume assuming temperature is constant.

What qualifies as an ideal gas?

An volume of a gas is just one where there were no intermolecular attraction forces and all collisions involving atoms or molecules are entirely elastic. It can be seen as a group of perfectly spherical particles that collide but do not otherwise interact with one another.

Briefing:

Initial pressure (P₁): 0.98 atm

Initial volume (V₁): 1.0 L

Final pressure (P₂): 0.50 atm

Final volume (V₂): ?

Boyle's law provides an expression for this for an ideal gas that experiences an isothermal change.

P₁×V₁ = P₂×V₂

V₂ = P₁×V₁ / P₂

V₂ = 0.98 atm * 1.0 l / 0.50 atm

V₂ = 1.96 L

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