Question

How many moles of Au atoms are present in one ounce of pure gold? [1 oz = 28.4 g] ​

Answer 1

Answer:

1.18×10^26atoms

Explanation:

The periodic table gives the "atomic mass" for every element (including gold) ,this is the mass (in grams) of that element that equates to1 mole of atoms of that element.

The atomic mass for gold is 196.96grams per mole.The no. of atoms in 1 gram of gold is therefore 196.96×6.023×10^26atoms