The base is 4 feet wide and will fit a normal 4X8 gym landing mat. If you need a Mat, we also have Bar and Mat Sets. To complete your home gym buy get all three Gymnastics apparatus, see our Bar, Beam and Mats Combo Sets. All our adjustable horizontal gymnastics bars comes with a 1 year manufacturer warranty.
You can find that on the periodic table under Al. The mass of one aluminum atom is 4.48 Ã 10-23 grams and the atomic mass is 26.982 grams. Answer: I suppose if you want to be literal about it, just use a balance.
(The atomic mass of aluminum is 26.982 grams per mole, and its atomic number is 13.) The attempt at a solution. I said that there are 6.02*10^23 atoms in a mole, and noted that after converting the mass into grams each sphere has .9265 moles. If the Aluminum spheres are uncharged there are 13 electrons per atom. I multiplied all three together to get 7.25*10^24 total electrons, but this comes up as the wrong answer.