Final answer:
The molar mass of gold is 196.97 g/mol, which means one mole of gold atoms weighs 196.97 grams. This is a standard conversion factor used in chemistry to relate the number of moles of a substance to its mass.
Step-by-step explanation:
Molar Mass of Gold
The molar mass of a substance represents the mass of one mole of its particles. According to the periodic table, the molar mass of gold (Au) is 196.97 g/mol. This value signifies that one mole of gold atoms has a mass of 196.97 grams. Since 1 mole contains Avogadro's number of particles, which is approximately 6.022 × 10²³ atoms, one mole of gold consists of this many atoms as well.
By understanding molar mass, students can calculate the mass of various amounts of substance using the molar mass as a conversion factor. For instance, to determine the mass of 2.561 moles of gold, one would simply multiply the number of moles by the molar mass of gold: 2.561 moles × 196.97 g/mol, which results in the mass of gold for the given number of moles.