What is the difference between a us gallon and a Canada gallon?

What material is the Rosetta Stone made out of? What computer case is best at cooling? Definition of encryption in network security? What is the largest size ddr dim sold today? How do you get the notes back on notes for the iPad if you deleted them? On itunes how can you buy only a couple of songs from an album without having to buy the whole album? How long will it be until robots take over the world? Why computer technology has done more good than harm to mankind? What is the halfway point between Boone NC and Frederick MD? What feature was first implemented in Windows XP that must occur within 30 days after installation? Where you can use pulsed laser or contineous laser? Who is the developer of ms office 2007? The process of saving data and instruction premanently is known as? How do you activate a computer monitor from your computer? How can you reduce the number of cells in an Excel spreadsheet? How do you connect Bluetooth to a computer? What is the latest iMac desktop computer model? A ten gallon hat actually only holds three quarters of a gallon how many ten gallon hats does it take to hold ten gallons? What is the gateway to 192.168.1.254? How much is 760 mL into Liters?