Answer to Question #192663 in Chemistry for Alexis

Question

Power Puff Girls like balloons. They bought a 2.15 L pink balloon at 1.75 atm. When they went outside, the volume changed to 1.32 L. What was the new pressure?

Answer 1

V₁ = 2.15 L

P₁ = 1.75 atm

V₂ = 1.32 L

P₂ = unknown

Assume that the temperature remain uncahnged: T₁ = T₂ = const

Solution:

Since the temperature and amount of gas remain unchanged, Boyle's law can be used.

Boyle's gas law can be expressed as: P₁V₁ = P₂V₂

To find the new pressure, solve the equation for P₂:

P₂ = P₁V₁ / V₂

P₂ = (1.75 atm × 2.15 L) / (1.32 L) = 2.85 atm

P₂ = 2.85 atm

Answer: The new pressure was 2.85 atm