Question

Determine the mass of hydrogen contained in 9.06 x 1024 H2O molecules.

Answer 1

15.2 g H2

Step-by-step explanation:

2H2O -> 2H2 + O2

9.06 x 10^24 molecules x (1 mol/6.022 x 10^23 molecules) x (2 mol H2/2 mol H2O) x (1.008 g/1 mol) = 15.2 g H2