What is the molarity of a solution prepared by dissolving 10.0 grams of naoh in water and diluting to 500mls with water?

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent