At 570. mm Hg and 25°C, a gas sample ne (in mm Hg) at a volume of 1250 mL and a temperature of 175°C and 25°C, a gas sample has a volume of 2270 mL. What is the final pressure

final pressure (P2) = 467.37 mm Hg

Explanation:

ideal gas:

PV = nRT

∴ P1 = 570 mm Hg * (atm / 760 mm Hg) = 0.75 atm

∴ T1 = 25 ° C = 298 K

∴ V1 = 1.250 L

∴ R = 0.082 atm L / K mol

⇒ n = P1*V1 / R*T1

⇒ n = ((0.75) * (1.25)) / ((0.082) * (298))

⇒ n = 0.038 mol gas

∴ T2 = 175 °C (448 K)

∴ V2 = 2.270 L

⇒ P2 = nRT2 / V2

⇒ P2 = ((0.038) * (0.082) * (448)) / 2.270

⇒ P2 = 0.615 atm * (760 mm Hg / atm) = 467.37 mm Hg