Question

stion 15 of 17 > A 2.25 g sample of an unknown gas at 61 °C and 1.10 atm is stored in a 2.35 L flask. What is the density of the gas? density: What is the molar mass of the gas? molar mass: g/mol

Answer 1

Let us consider the gas behaves ideally mass of the gas = 2.25g Temp = 61°C = (273+61) * = 334 K Pressure = 1.10 atm volume = 2.35 L R = 0.082 057 Latm mol-kt According to ideal gas Law, S n = no. of moles of the gas PV = nRT 1. M = molecular weight in Now, PV = mm RT molar mass of the gas Putting all above values, we gel- MRT m= pr Unit calculation 2.25X0.082057x 334B gx Koatm.moral.KK 1.10X 2.35 atm .t a M = Density = 23.855g.mol 2,25 / = 0.957 .: Density of the gas: 0.957 g/L : molar mass of the gas: 23.855 gamall