What is the number of moles of naoh in 26.5 ml of 0.500 molar naoh?

Which substances have the lowest melting points: ionic covalent, or metallic

According to the tide table below what time of day will the highest tide occur?

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?