Consider a sample containing (NH4)2Cr2O7...

Consider a sample containing `(NH_4)_2Cr_2O_7`
Number of gm molecules of `(NH_4)_2Cr_2O_7` present in the sample if mass of hydrogen obtained from the sample is 2g

A

`0.25 N_A`

B

`0.25`

C

`0.125 N_A`

D

`0.125`

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