Answer:
Explanation:
Use gas equation to calculate mol of H2O gas:
P = pressure = 389/760 = 0.512atm
V = volume = 4L
n=???
R = 0.082057
T = 121+273 = 394K
0.512 * 4 = n*0.082057*394
n = (0.512*4) / (0.082057*394)
n = 2.048 / 32.33
n = 0.063 mol H2O
Molar5 mass H2O = 18g/mol
Mass of water = 0.063*18
Mass of water valour = 1.14g
