Answer:
0.38
Explanation:its right bc it is
2.342*10^23
Explanation:
# of molecules = Moles * NA
# of molecules = (Mass in grams) / (Molar Mass) * NA
Molar Mass of H2O = 18g/mol
Avogadro's number(NA) = 6.022*10^23
Now,
# of molecules = (7g/18gmol)*(6.022*10^23) = 2.342 * 10^23
