In Chapter 1, we described Dalton’s theory that each chemical compound has a particular combination of atoms and that the ratios of the numbers of atoms of the elements present are usually small whole numbers. ![]() (8 atoms)(15.9994 amu/atom) = 127.9952 amuįormula mass of Ca 3(PO 4) = 310.177 2amu Now take up antilog of this number in the antilog table which is to be used exactly like the log table. Home Bookshelves Introductory, Conceptual, and GOB Chemistry Basics of General, Organic, and Biological Chemistry (Ball et al. ![]() The molar mass of any element can be determined by finding the atomic mass of the element on the periodic table. (2 atoms)(30.973761 amu/atom) = 6.0474 amu One mole (abbreviated mol) is equal to 6.022×10 23 molecular entities (Avogadro’s number), and each element has a different molar mass depending on the weight of 6.022×10 23 of its atoms (1 mole).
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