Answer :
Explanation:
First, we need to find the atomic mass of Na and O in the periodic table.
Na: 22.99 g/mol
O: 15.99 g/mol
So we multiply the atomic mass by the number of atoms of each element. In Na2O we have 2 atoms of Na and 1 atom of O.
Na: 2 * 22.99 = 45.98
O: 1 * 15.99 = 15.99
Sum the results: 61.97 g/mol
Answer: The molar mass of Na2O is 61.97 g/mol