Human: How can I determine the atomic mass of an element? Assistant: 
To determine the atomic mass of an element, you need to know its atomic number. You can find this information by looking up the periodic table for that element. Once you have the atomic number, you can use the atomic mass unit (AMU) to calculate the atomic mass. The AMU is a unit of measurement used in chemistry and physics. It is equal to 1/12 the mass of a carbon-12 atom.