Calculate the pH if the pOH of a strong acid is 11.
Please!

How many grams of n2h4 will be consumed by 23 g of n2o4

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

The same side of the moon always faces earth because the