York. Shetland Islands. High School and College Directory: a b c d e f g h i j k l m n o p q r s t u v w x y z #. Teacher and Professor Directory: a b c d e f g h i j k l m n o p q r s t u v w x y z. Copyright 2001-2015 RateMyTeachers.com.All Rights Reserved.igh School and College Directory: a b c d e f g h i j k l m n o p q r s t u v w x y z #. Teacher and Professor Directory: a b c d e f g h i j k l m n o p q r s t u v w x y z. Copyright 2001-2015 RateMyTeachers.com.
Helium is commercially recovered from natural gas deposits, mostly from Texas, Oklahoma and Kansas. Helium gas is used to inflate blimps, scientific balloons and party balloons. It is used as an inert shield for arc welding, to pressurize the fuel tanks of liquid fueled rockets and in supersonic windtunnels.
Latex balloons filled with helium last between 12 to 48 hours, depending on the size of the balloons; if filled with Hi-Float they last about two to 14 days. Hi-Float is a liquid protective coating that is inserted into the balloon and spread around to prevent helium from escaping as quickly. Continue Reading.