To determine the quantity of moles of gas in the sample of chlorine gas, we utilize the ideal gas equation which is PV=nRT n=number of moles R= gas constant (62.36367 l.torr/k.mol) P=pressure V=volume From the ideal gas equation, we can derive n= PV/RT n= (328 x5.0)/ (62.36367 x310)= 0.085 moles
To start, consult the periodic table to pinpoint the element with an average atomic mass of 24.3. The amu is simply the number listed under the element, leading us to conclude that Mg is the answer.