A balloon has a volume of 1.5-L at 25*C. What would be the volume of the balloon if it were placed in a container of hot water at 90*C?

1.8 L

Explanation:

Ideal gas law:

PV = nRT

where P is absolute pressure,

V is volume,

n is number of moles,

R is the gas constant,

and T is absolute temperature.

Rearranging:

V / T = nR / P

Since n, R, and P are constant:

V₁ / T₁ = V₂ / T₂

1.5 L / (298.15 K) = V / (363.15 K)

V = 1.8 L