Oxygen in the air. The percentage of oxygen in the air can be measured by passing a known volume of air over hot copper, and measuring the decrease in volume as the oxygen reacts with it. Here are the equations for this reaction: copper + oxygen â copper oxide. 2Cu + O2 â 2CuO.
Get ready - World Backup is March 31st! About World Backup Day is a day for people to learn about the increasing role of data in our lives and the importance of regular backups.
Join us in celebration of World Kidney Day on Thursday, March 14, 2013 at the Stephanie Tubbs Jones Health Center. The event is from 10:00am to 1:00pm. You can take part in kidney health screenings, gain valuable information on kidney disease and enjoy healthy cooking demonstrations.