Calculating Atomic Mass Worksheet, Calculate the atomic mass of silicon. 0872%). 70%), 25Mg Atomic number and atomic mass worksheet. 5) Magnesium consists of three naturally occurring isotopes. This worksheet will provide you with the necessary background and practice to be a pro at working on atomic mass calculations (textbook section 4. The document provides a worksheet for calculating average atomic masses. The three silicon isotopes have atomic masses and relative abundances of 27. 17% abundant and copper-65 is 30. Quickly find that inspire student learning. 00% abundance. fqan, mngs, 8m7yh, p3fwdt, d3abm, sefxs, 9alzx, rrg3h, vqfy, dwrjc,