1.

Extra pure N_(2) can be obtained by heating

Answer»

`BA(N_(3))_(2)`
`(NH_(4))_(2)Cr_(2)O_(7)`
`NH_(4)NO_(2)`
`(NH_(4))_(2)SO_(4)`

SOLUTION :`Ba(N_(3))_(2)overset(DELTA)toBa+3N_(2)`


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