Sulfur,the 5th most common element on Earth, is a key component of the amino acids cysteine and methionine. It has three main isotopes, 32S, 33S, and 34S. Calculate the atomic mass of sulfur.  Isotope Isotopic Mass (amu) Abundance (%) 32S   31.972071   94.9  33S  32.971458 0.8   34S  33.967897 4.3   Answer choices: 32.0659 amu 32.9705 amu 34.4398 amu 33.0699 amu 33.0701 amu

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.