Answer:
The volume is 0,393 Liters (393 ml)
Step-by-step explanation:
We use the formula PV=nRT. We clear n (number of moles). STP conditions are 1 atm pressure and 273 K temperature. The temperature in Kelvin= 25+273=298K. The volume in L: 435/1000= 0,435 L.
PV=nRT n=PV/RT n=(0,987 atmx0, 435 l)/(0,082 l atm/K mol x298K)
n=0,0176 mol
In conditions STP:
PV= nRT V=(nRT)/P
V= 0,0176 mol x 0,082 l atm /K mol / 1 atm = 0,393 L