The document discusses several chemistry concepts including: - Calculating average mass and ratios using sample masses of jelly beans and mints. - Using atomic mass units (amu) to count atoms by weighing samples and determining the number of atoms in samples of various elements. - Defining the mole as 6.022x10^23 units of a substance, and using moles to calculate the number of atoms in samples. - Calculating molar mass and using molar mass to determine the mass of samples containing a given number of moles.

16. Chemical Composition 131.3 6.022 x 10 23 Xenon 10.81 6.022 x 10 23 Boron 32.07 6.022 x 10 23 Sulfur 55.85 6.022 x 10 23 Iron 196.97 6.022 x 10 23 Gold 26.98 6.022 x 10 23 Aluminum Mass of Sample (g) Number of Atoms Element