A canister holds a gas at 16.3 psi when the temperature is -15 °C.What will the pressure be when the temperature is increased to 20.°C?
A)-12.2 psi
B)-21.7 psi
C)21.7 psi
D)14.4 psi
E)18.5 psi

Question

Quizplus · Accepted Answer

To find the new pressure after a temperature change, we can use the combined gas law, which simplifies to $P_1/T_1 = P_2/T_2$ when the volume and amount of gas are constant. First, convert temperatures to Kelvin: $T_1 = -15°C + 273.15 = 258.15 K$ and $T_2 = 20°C + 273.15 = 293.15 K$. Solve for $P_2$: $P_2 = P_1 \times (T_2/T_1) = 16.3 \times (293.15/258.15) ≈ 18.5 psi$.

A Canister Holds a Gas at 16