Answer: 12.011g/mol
Explanation: The molar mass of any element is usually stated at the bottom of periodic table (depending of your table anyways). Remember that the periodic table speaks to you in moles so every molar mass under the element is for 1 mole. By this I mean for example, 1 mole of Carbon = 12.011g of Carbon.
0.80M = x/1.5L
x = 1.2 moles
1.2 moles of Na is about 27.6 grams of Na
Because of its chemical structure.
