How many moles in 2.45 x 10^45 atoms of sodium, Na? A. 4.07 x 10^21 moles
B. 1.47 x 10^47 moles
C. 4.07 x 10^467 moles
D. 1.678 moles
please only answer if you know and please show your work

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

Why is permeable soil best for plants that need a lot of drainage?

Compare and contrast solutions and suspensions