Answer:
A)27.6g H2O x (1 mole H2O/ 18.02g H2O) x (1 mole H2/ 2mole H2O)
= 0.766 mol H2 x 6.022 x 10^23
= 4.61 x10^23 molecules
B)12.9g H2O x (1 mole H2O/ 18.02g H2O) x (2 mole Na / 2mole H2O)
=0.716 mol Na x 6.022x 10^23
= 4.31 x 10^23 atoms
Explanation:
I hope it's help
