How many grams of sodium are contained in 10 grams of sodium sulfate?

What's the percent Na in Na2SO4? Isn't that [(2*atomic mass Na/molar mass Na2SO4)*100? Then 10 g Na2SO4 x percent Na (as a fraction) = g Na.

To find out how many grams of sodium are contained in 10 grams of sodium sulfate, we need to know the molar mass of sodium sulfate and the molar mass of sodium.

1. The molar mass of sodium sulfate (Na2SO4) can be calculated by adding up the atomic masses of each element: 2 sodium atoms (2 * atomic mass of sodium) + 1 sulfur atom (1 * atomic mass of sulfur) + 4 oxygen atoms (4 * atomic mass of oxygen).

The atomic mass of sodium (Na) is approximately 23 g/mol, the atomic mass of sulfur (S) is approximately 32 g/mol, and the atomic mass of oxygen (O) is approximately 16 g/mol.

So, the molar mass of sodium sulfate is:
(2 * 23 g/mol) + (1 * 32 g/mol) + (4 * 16 g/mol) = 46 g/mol + 32 g/mol + 64 g/mol = 142 g/mol.

2. The molar mass of sodium (Na) is approximately 23 g/mol.

3. Now, we can calculate the number of moles of sodium sulfate in 10 grams. This is done by dividing the mass of sodium sulfate by its molar mass:

Number of moles of sodium sulfate = Mass of sodium sulfate / Molar mass of sodium sulfate
= 10 g / 142 g/mol.

4. Finally, to find the number of grams of sodium in 10 grams of sodium sulfate, we need to multiply the number of moles of sodium sulfate by the molar mass of sodium:

Mass of sodium = Number of moles of sodium sulfate * Molar mass of sodium
= (10 g / 142 g/mol) * 23 g/mol.

Now, you can calculate the exact value using a calculator:

Mass of sodium = (10 / 142) * 23 grams.

By performing the calculations, you will find the exact number of grams of sodium contained in 10 grams of sodium sulfate.