Respuesta :

ashish4112119

Answer:

154.9475 grams

Explanation:

61.979g/mol is molar mass of Na2O

61.979g/mol times .250 M times 10L = 154.9475 grams
n[Na2O]= CxV
We have C= 0.250M, V=10.0L
So n[Na2O]= 0.250x10.0=2.5mol
M[Na2O]=62g/mol
—> m= nxM = 2.5x62=155g