Answer:
B) 1 atm
Explanation:
According to Gay-Lussac's law, the pressure of a given amount of gas at constant volume is directly proportional to its temperature (in Kelvin). This is mathematically expressed as:
P₁/T₁ = P₂/T₂
From the problem, we have the following data:
P₁= 1.5 atm
T₁= 127 °C + 273 = 400 K
T₂= 27 °C + 273 = 300 K
Thus, we calculate P₂ - final pressure - as follows:
P₂ = P₁/T₁ x T₂ = (1.5 atm)/(400 K) x 300 K = 1.125 atm
Therefore, the option which is closest to the new pressure after cooling is B) 1 atm
