Asealed, rigid l.0-liter cylinder contains he gas at stp. an identical sealed cylinder contains ne gas at stp. these two cylinders contain the same number of(1) atoms(2) electrons(3) ions(4) protons

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98