What the pH value of THF?

How fast is 200 kilometers into miles per hour? What layer in the leaf can have hair spines and wax? What bacteria is needed to carry out their life function? What is the name of the rubber top of an eye dropper? Why is there 115v on neutral wire in receptacle when 208v circuit is on? What is a Substance added to another to increase pliability called? Diameter of the milky way in kilometers? Which metals can be magnetized? What are Earth's and Neptune's rates of rotation? Is a mile longer or a acre? What time is it in Johannesburg if it is 5pm pacific time? What is a term used to describe a country that is entirely surrounded by land? Explain the fact that the temperature of the ocean at great depth is very constant the year round at the temperature of about 4C? Can you continue forever to break an ice cube into smaller and smaller pieces or ice? How does the time temperature cooling curve of an alloy of eutectic composition different from that of a pure metal? What are the high and low temperatures in Lima Peru? Is pumice attracted to a magnet? Taking in fluids so that the body functions properly? What is a ppm in oscilloscope? Why does the heart automatically adjust the flow of blood to match activity levels?