Respuesta :

tessa122102

Answer:

The formula mass of Na2S04 is 142.04 g/mol

oastar12

Answer:

142.04 g/mol

Explanation:

the formula Na2SO4 means:two moles sodium (45.98g), one mile sulfur (32.06g), and four moles oxygen (64.00g) combine to form one mole of sodium surface (142.04g).