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Essay

Nitrogen

Essay specific features

 

Issue:

Science

 

Written by:

Christopher A

 

Date added:

December 8, 2014

 

Level:

 

Grade:

A

 

No of pages / words:

2 / 520

 

Was viewed:

3542 times

 

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Essay content:

Nitrogen exists in two natural forms of isotopes, and four radioactive isotopes have been artificially prepared. Nitrogen melts at -210.01° C (-346.02° F), boils at -195.79° C (-320.42° F), and has a density of 1.251 g/liter at 0° C (32° F). The atomic weight of nitrogen is 14.007. Nitrogen is obtained from the atmosphere by passing air over heated copper or iron...
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Nitrogen is obtained from the atmosphere by passing air over heated copper or iron. The oxygen is removed from the air, leaving nitrogen mixed with some inert gases. Pure nitrogen is obtained by partial evaporation of liquid air because liquid nitrogen has a lower boiling point than liquid oxygen, the nitrogen evaporates off first and can be collected...
displayed 300 characters

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