4. A 75.0-g sample of dinitrogen monoxide is confined in 3.1-L vessel. What is the pressure (in atm) at 115 ºC?

May 2021 2 261 Report

4. A 75.0-g sample of dinitrogen monoxide is confined in 3.1-L vessel. What is the pressure (in atm) at 115 ºC?

4. A 75.0-g sample of dinitrogen monoxide is confined in 3.1-L vessel. What is the pressure (in atm) at 115 ºC? show work please

dinitrogen monoxide = N2O

the molar mass is 2(N) + O = 2(14) + (16) = 44 g

So, there are n = (75.0 g)*(1 mol / 44 g) = 1.70 mol of N2O

Also, T = 115 C = 388.15 K

Using PV = nRT

P(3.1L) = (1.70 mol)(0.08205746 (L*atm)/(K*mol))(388.15 K)

Solving gives P = 17.51 atm (round appropriately.)