1 The largest school district by enrollment with an election in 2016 is Wake County Public School System with 153,534 K-12 students.  The smallest North Carolina school district among the nation's largest with an election in 2016 is Duplin County Schools with 9,628 K-12 students.
Freon only remains a liquid while under pressure inside your refrigerator's cooling system. The chemical changes to a gas as soon as it contacts the air. This means, when you smell freon in and around your refrigerator, you're also inhaling varying amounts of freon gas. According to the Environmental Protection Agency, freon gas is denser than air and travels very slowly to the upper atmosphere.
Pressure & Density â¢ Cooler air has less kinetic energy and therefore less motion than warmer air. It has more molecules (more mass) in any given volume so is more dense â¢ Warmer air has more energy and more motion and therefore has fewer molecules (less mass) in a given volume so is less dense 14