Final answer:
One mole of gold (Au) weighs approximately 197 grams, as the molar mass of gold is 196.97 grams per mole.
Step-by-step explanation:
The question relates to determining the weight of one mole of the element gold (Au). According to the periodic table, the molar mass of gold is 196.97 grams per mole (g/mol). Therefore, 1 mole of gold weighs approximately 196.97 grams.
This means that the correct answer to the student's question is A. Approximately 197 grams, since this value is numerically closest to the actual molar mass of gold, 196.97 g/mol. One mole of any element has a mass numerically equal to its atomic mass in grams, and contains Avogadro's number of particles, which is 6.022 × 1023