A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?

PV = nRT

P = ?
V = 6L
n = 27/molar mass H2O
T = 390.2 K
R = 0.08206 L*atm/mol*K