Answer to Question #80512 in General Chemistry for Deahjia

Question

How many miles of gas are in a gas sample occupying 0.250 L at 215 mmHg and 25C

Answer 1

PV = nRT
P = Pressure = 215 mmHg
V= Volume = 0.25 L
n = moles = ?
R= Gas Constant = 62.36 L·mmHg/mol·K

T = Temperature = 25 °C = 298 K

(215mmHg*0.25L) = n (62.36L·mmHg/mol·K*298K)

n = (215*0.25)/(62.36*298)

n = 0.0029 mol