The reactions of nitrous acid with 1Â°- and 2Â°- aliphatic amines may be explained by considering their behavior with the nitrosonium cation, NO(+) , an electrophilic species present in acidic nitrous acid solutions.
Main article: Indoor water park. The first-ever indoor water park was built in Edmonton, Alberta, Canada, in 1985 at the West Edmonton Mall as part of the $1.2-billion-dollar Phase III expansion. World Waterpark is still the world's largest indoor water park, at over 817,800 sq ft (75,980 m 2) in size.
Typhoon Lagoon at Walt Disney World is the worldâs top water park with attendance of 2.1 million. Blizzard Beach is third in the world with 1.9 million. See the report for additional data on water parks. For historical attendance data at Disney parks prior to year 2010 and back to 1991 click on this link at Scottware.