Final answer:
The formula mass of table salt (NaCl) is the sum of the atomic masses of sodium (22.99 amu) and chloride (35.45 amu), resulting in a total of 58.44 amu.
Step-by-step explanation:
The formula mass of table salt, which is chemically known as sodium chloride or NaCl, is the sum of the atomic masses of its constituent ions. These ions are sodium (Na) and chloride (Cl). To calculate the formula mass, we add the atomic mass of one sodium ion (22.99 amu) to the atomic mass of one chloride ion (35.45 amu). Therefore, to two decimal places, the formula mass of NaCl, or table salt, is 58.44 amu. This calculation assumes a 1:1 ratio of sodium to chloride ions in the compound.