# Q 24 part (d). 24. Solid ammonium dichromate decomposes as under:  ${\left({\mathrm{NH}}_{4}\right)}_{2}{\mathrm{Cr}}_{2}{\mathrm{O}}_{7}\to {\mathrm{N}}_{2}+{\mathrm{Cr}}_{2}{\mathrm{O}}_{3}+4{\mathrm{H}}_{2}\mathrm{O}$ If 63 g of ammonium dichromate decomposes, calculate: (a) The quantity in moles of (NH4)2 Cr2O7 (b) The quantity in moles of nitrogen formed (c) The volume of N2 evolved at STP.  (d) The loss of mass

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