Question

What is the molar mass of sodium oxygen oxalate `Na_2C_2O_4`?

Answer 1

Sodium oxalate has a molar mass of `134 g/(mol)`

Explanation:

`color(magenta)"Let us use this equation to answer the question:"`

atomic weight of element `xx`number of atoms given by subscript `=` molar mass

Based on the chemical formula, we have 2 sodium atoms. The atomic mass would have to be multiplied by 2 to obtain a mass of 45.98g/mol

Next, you have 2 carbon atoms, so you would multiply the atomic mass of C by 2 to obtain a mass of 24.02 g/mol

Finally, since there are 4 atoms of oxygen, the atomic mass of O has to be multiplied by 4 to get a value of 64.00 g/mol.

Now you want to add the mass of each atom together to obtain the molar mass of the entire compound:

`color(blue) ("45.98 g/mol + 24.02 g/mol + 64.00 g/mol = 134 g/mol")`