Answer:
R = 0.08208 L·atm/mol·K (based on data given)
Step-by-step explanation:
PV = nRT => R = PV/nT
P = Pressure in atmospheres = 3.00 atm
V = Volume in Liters = 17.4 Liters
n = moles of substance = 2.00 moles
T = temperature in Kelvin = 45°C + 273 = 318K
R = (3.00atm)(17.4L)/(2.00mol)(318K) = 0.08208 L·atm/mol·K